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    Randall Bruce Widelitz, PhD

    TitleAssociate Professor of Research Pathology
    SchoolKeck School of Medicine of USC
    DepartmentPathology
    AddressHMR 2011 Zonal Ave
    Health Sciences Campus
    Los Angeles California 90089-9092
    Phone+1 323 442 1158
    vCardDownload vCard

      Collapse Overview 
      Collapse Overview
      When organs are damaged due to injury they can be repaired or regenerated. Repair produces scars which do not offer complete functionality. In contrast, regeneration restores complete functionality. We have been trying to understand why in some tissues, repair is the primary response and in others regeneration is the primary response to injury. In particular, we have been studying the role of adult progenitor cells in tissue regeneration using ectodermal organs (hairs, feathers, and teeth) as models. Our focus has been on molecular and cellular aspects stem cell activation and how cells are guided for proper morphogenesis.


      Collapse Bibliographic 
      Collapse Publications
      Publications listed below are automatically derived from MEDLINE/PubMed and other sources, which might result in incorrect or missing publications. Researchers can login to make corrections and additions, or contact us for help.
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      1. Lei M, Schumacher LJ, Lai YC, Juan WT, Yeh CY, Wu P, Jiang TX, Baker RE, Widelitz R, Yang L, Chuong CM. Self-organization process in newborn skin organoid formation inspires strategy to restore hair regeneration of adult cells. Proc Natl Acad Sci U S A. 2017 Aug 22; 114(34):E7101-E7110. PMID: 28798065.
        View in: PubMed
      2. Li A, Figueroa S, Jiang TX, Wu P, Widelitz R, Nie Q, Chuong CM. Diverse feather shape evolution enabled by coupling anisotropic signalling modules with self-organizing branching programme. Nat Commun. 2017 Jan 20; 8:ncomms14139. PMID: 28106042.
        View in: PubMed
      3. Widelitz R, Abdelhamid A, Khalil Khan M, Elkarargy A, Chuong CM, Wu P. MicroCT Imaging on Living Alligator Teeth Reveals Natural Tooth Cycling. Methods Mol Biol. 2017; 1650:355-362. PMID: 28809034.
        View in: PubMed
      4. Tsai S, Abdelhamid A, Khan MK, Elkarargy A, Widelitz R, Chuong CM, Wu P. The Molecular Circuit Regulating Tooth Development in Crocodilians. J Dent Res. 2016 Dec; 95(13):1501-1510. PMID: 27872325.
        View in: PubMed
      5. Widelitz R, Chuong CM. Quorum sensing and other collective regenerative behavior in organ populations. Curr Opin Genet Dev. 2016 Oct; 40:138-143. PMID: 27500541.
        View in: PubMed
      6. Wu P, Ng CS, Yan J, Lai YC, Chen CK, Lai YT, Wu SM, Chen JJ, Luo W, Widelitz R, Li WH, Chuong CM. Topographical mapping of a- and ß-keratins on developing chicken skin integuments: Functional interaction and evolutionary perspectives. Proc Natl Acad Sci U S A. 2015 Dec 08; 112(49):E6770-9. PMID: 26598683; PMCID: PMC4679038.
      7. Chen CC, Plikus MV, Tang PC, Widelitz R, Chuong CM. The Modulatable Stem Cell Niche: Tissue Interactions during Hair and Feather Follicle Regeneration. J Mol Biol. 2016 Apr 10; 428(7):1423-40. PMID: 26196442; PMCID: PMC4716892 [Available on 04/10/17].
      8. Tsai MS, Suksaweang S, Jiang TX, Wu P, Kao YH, Lee PH, Widelitz R, Chuong CM. Proper BMP Signaling Levels Are Essential for 3D Assembly of Hepatic Cords from Hepatoblasts and Mesenchymal Cells. Dig Dis Sci. 2015 Dec; 60(12):3669-80. PMID: 26173507.
        View in: PubMed
      9. Li A, Lai YC, Figueroa S, Yang T, Widelitz R, Kobielak K, Nie Q, Chuong CM. Deciphering principles of morphogenesis from temporal and spatial patterns on the integument. Dev Dyn. 2015 Aug; 244(8):905-20. PMID: 25858668; PMCID: PMC4520785.
      10. Bai X, Lei M, Shi J, Yu Y, Qiu W, Lai X, Liu Y, Yang T, Yang L, Widelitz R, Chuong CM, Lian X. Roles of GasderminA3 in Catagen-Telogen Transition During Hair Cycling. J Invest Dermatol. 2015 Sep; 135(9):2162-2172. PMID: 25860385; PMCID: PMC4537385.
      11. Chen CC, Wang L, Plikus MV, Jiang TX, Murray PJ, Ramos R, Guerrero-Juarez CF, Hughes MW, Lee OK, Shi S, Widelitz R, Lander AD, Chuong CM. Organ-level quorum sensing directs regeneration in hair stem cell populations. Cell. 2015 Apr 09; 161(2):277-90. PMID: 25860610; PMCID: PMC4393531.
      12. Chen CF, Foley J, Tang PC, Li A, Jiang TX, Wu P, Widelitz R, Chuong CM. Development, regeneration, and evolution of feathers. Annu Rev Anim Biosci. 2015; 3:169-95. PMID: 25387232.
        View in: PubMed
      13. Chuong CM, Bhat R, Widelitz R, Bissell MJ. SnapShot: Branching Morphogenesis. Cell. 2014 Aug 28; 158(5):1212-1212.e1. PMID: 25171418; PMCID: PMC4381872.
      14. Ng CS, Wu P, Fan WL, Yan J, Chen CK, Lai YT, Wu SM, Mao CT, Chen JJ, Lu MY, Ho MR, Widelitz R, Chen CF, Chuong CM, Li WH. Genomic organization, transcriptomic analysis, and functional characterization of avian a- and ß-keratins in diverse feather forms. Genome Biol Evol. 2014 Aug 24; 6(9):2258-73. PMID: 25152353; PMCID: PMC4202321.
      15. Lei M, Guo H, Qiu W, Lai X, Yang T, Widelitz R, Chuong CM, Lian X, Yang L. Modulating hair follicle size with Wnt10b/DKK1 during hair regeneration. Exp Dermatol. 2014 Jun; 23(6):407-13. PMID: 24750467; PMCID: PMC4383245.
      16. Chen CC, Murray PJ, Jiang TX, Plikus MV, Chang YT, Lee OK, Widelitz R, Chuong CM. Regenerative hair waves in aging mice and extra-follicular modulators follistatin, dkk1, and sfrp4. J Invest Dermatol. 2014 Aug; 134(8):2086-2096. PMID: 24618599; PMCID: PMC4102635.
      17. Chu Q, Cai L, Fu Y, Chen X, Yan Z, Lin X, Zhou G, Han H, Widelitz R, Chuong CM, Wu W, Yue Z. Dkk2/Frzb in the dermal papillae regulates feather regeneration. Dev Biol. 2014 Mar 15; 387(2):167-78. PMID: 24463139; PMCID: PMC4384700.
      18. Hughes MW, Jiang TX, Lin SJ, Leung Y, Kobielak K, Widelitz R, Chuong CM. Disrupted ectodermal organ morphogenesis in mice with a conditional histone deacetylase 1, 2 deletion in the epidermis. J Invest Dermatol. 2014 Jan; 134(1):24-32. PMID: 23792463; PMCID: PMC3843967.
      19. Wu P, Wu X, Jiang TX, Elsey RM, Temple BL, Divers SJ, Glenn TC, Yuan K, Chen MH, Widelitz R, Chuong CM. Specialized stem cell niche enables repetitive renewal of alligator teeth. Proc Natl Acad Sci U S A. 2013 May 28; 110(22):E2009-18. PMID: 23671090; PMCID: PMC3670376.
      20. Lin SJ, Foley J, Jiang TX, Yeh CY, Wu P, Foley A, Yen CM, Huang YC, Cheng HC, Chen CF, Reeder B, Jee SH, Widelitz R, Chuong CM. Topology of feather melanocyte progenitor niche allows complex pigment patterns to emerge. Science. 2013 Jun 21; 340(6139):1442-5. PMID: 23618762; PMCID: PMC4144997.
      21. Li A, Chen M, Jiang TX, Wu P, Nie Q, Widelitz R, Chuong CM. Shaping organs by a wingless-int/Notch/nonmuscle myosin module which orients feather bud elongation. Proc Natl Acad Sci U S A. 2013 Apr 16; 110(16):E1452-61. PMID: 23576731; PMCID: PMC3631647.
      22. Chueh SC, Lin SJ, Chen CC, Lei M, Wang LM, Widelitz R, Hughes MW, Jiang TX, Chuong CM. Therapeutic strategy for hair regeneration: hair cycle activation, niche environment modulation, wound-induced follicle neogenesis, and stem cell engineering. Expert Opin Biol Ther. 2013 Mar; 13(3):377-91. PMID: 23289545; PMCID: PMC3706200.
      23. Kandyba E, Leung Y, Chen YB, Widelitz R, Chuong CM, Kobielak K. Competitive balance of intrabulge BMP/Wnt signaling reveals a robust gene network ruling stem cell homeostasis and cyclic activation. Proc Natl Acad Sci U S A. 2013 Jan 22; 110(4):1351-6. PMID: 23292934; PMCID: PMC3557042.
      24. Chuong CM, Yeh CY, Jiang TX, Widelitz R. Module-based complexity formation: periodic patterning in feathers and hairs. Wiley Interdiscip Rev Dev Biol. 2013 Jan-Feb; 2(1):97-112. PMID: 23539312; PMCID: PMC3607644.
      25. Lei MX, Chuong CM, Widelitz R. Tuning Wnt signals for more or fewer hairs. J Invest Dermatol. 2013 Jan; 133(1):7-9. PMID: 23299447; PMCID: PMC3686512.
      26. Yue Z, Jiang TX, Wu P, Widelitz R, Chuong CM. Sprouty/FGF signaling regulates the proximal-distal feather morphology and the size of dermal papillae. Dev Biol. 2012 Dec 01; 372(1):45-54. PMID: 23000358; PMCID: PMC3586415.
      27. Ng CS, Wu P, Foley J, Foley A, McDonald ML, Juan WT, Huang CJ, Lai YT, Lo WS, Chen CF, Leal SM, Zhang H, Widelitz R, Patel PI, Li WH, Chuong CM. The chicken frizzle feather is due to an a-keratin (KRT75) mutation that causes a defective rachis. PLoS Genet. 2012; 8(7):e1002748. PMID: 22829773; PMCID: PMC3400578.
      28. Li J, Jiang TX, Hughes MW, Wu P, Yu J, Widelitz R, Fan G, Chuong CM. Progressive alopecia reveals decreasing stem cell activation probability during aging of mice with epidermal deletion of DNA methyltransferase 1. J Invest Dermatol. 2012 Dec; 132(12):2681-90. PMID: 22763785; PMCID: PMC3465630.
      29. Chuong CM, Randall VA, Widelitz R, Wu P, Jiang TX. Physiological regeneration of skin appendages and implications for regenerative medicine. Physiology (Bethesda). 2012 Apr; 27(2):61-72. PMID: 22505663; PMCID: PMC3620028.
      30. Suksaweang S, Jiang TX, Roybal P, Chuong CM, Widelitz R. Roles of EphB3/ephrin-B1 in feather morphogenesis. Int J Dev Biol. 2012; 56(9):719-28. PMID: 23319347; PMCID: PMC3684256.
      31. Plikus MV, Baker RE, Chen CC, Fare C, de la Cruz D, Andl T, Maini PK, Millar SE, Widelitz R, Chuong CM. Self-organizing and stochastic behaviors during the regeneration of hair stem cells. Science. 2011 Apr 29; 332(6029):586-9. PMID: 21527712; PMCID: PMC3321266.
      32. Jiang TX, Tuan TL, Wu P, Widelitz R, Chuong CM. From buds to follicles: matrix metalloproteinases in developmental tissue remodeling during feather morphogenesis. Differentiation. 2011 Jun; 81(5):307-14. PMID: 21497985; PMCID: PMC3114260.
      33. Hughes MW, Wu P, Jiang TX, Lin SJ, Dong CY, Li A, Hsieh FJ, Widelitz R, Chuong CM. In search of the Golden Fleece: unraveling principles of morphogenesis by studying the integrative biology of skin appendages. Integr Biol (Camb). 2011 Apr; 3(4):388-407. PMID: 21437328; PMCID: PMC3620034.
      34. Lin CM, Jiang TX, Baker RE, Maini PK, Widelitz R, Chuong CM. Spots and stripes: pleomorphic patterning of stem cells via p-ERK-dependent cell chemotaxis shown by feather morphogenesis and mathematical simulation. Dev Biol. 2009 Oct 15; 334(2):369-82. PMID: 19647731; PMCID: PMC2811698.
      35. Chuong CM, Widelitz R. The river of stem cells. Cell Stem Cell. 2009 Feb 06; 4(2):100-2. PMID: 19200797; PMCID: PMC4389586.
      36. Plikus MV, Widelitz R, Maxson R, Chuong CM. Analyses of regenerative wave patterns in adult hair follicle populations reveal macro-environmental regulation of stem cell activity. Int J Dev Biol. 2009; 53(5-6):857-68. PMID: 19378257; PMCID: PMC2759942.
      37. Mayer JA, Foley J, De La Cruz D, Chuong CM, Widelitz R. Conversion of the nipple to hair-bearing epithelia by lowering bone morphogenetic protein pathway activity at the dermal-epidermal interface. Am J Pathol. 2008 Nov; 173(5):1339-48. PMID: 18832580; PMCID: PMC2570124.
      38. Widelitz R. Wnt signaling in skin organogenesis. Organogenesis. 2008 Apr; 4(2):123-33. PMID: 19279724; PMCID: PMC2634258.
      39. Widelitz R, Veltmaat JM, Mayer JA, Foley J, Chuong CM. Mammary glands and feathers: comparing two skin appendages which help define novel classes during vertebrate evolution. Semin Cell Dev Biol. 2007 Apr; 18(2):255-66. PMID: 17382566; PMCID: PMC4382004.
      40. Lin CM, Jiang TX, Widelitz R, Chuong CM. Molecular signaling in feather morphogenesis. Curr Opin Cell Biol. 2006 Dec; 18(6):730-41. PMID: 17049829; PMCID: PMC4406286.
      41. Widelitz R, Baker RE, Plikus M, Lin CM, Maini PK, Paus R, Chuong CM. Distinct mechanisms underlie pattern formation in the skin and skin appendages. Birth Defects Res C Embryo Today. 2006 Sep; 78(3):280-91. PMID: 17061271; PMCID: PMC4380182.
      42. Wu P, Jiang TX, Shen JY, Widelitz R, Chuong CM. Morphoregulation of avian beaks: comparative mapping of growth zone activities and morphological evolution. Dev Dyn. 2006 May; 235(5):1400-12. PMID: 16586442; PMCID: PMC4381996.
      43. Yue Z, Jiang TX, Widelitz R, Chuong CM. Wnt3a gradient converts radial to bilateral feather symmetry via topological arrangement of epithelia. Proc Natl Acad Sci U S A. 2006 Jan 24; 103(4):951-5. PMID: 16418297; PMCID: PMC1347975.
      44. Yue Z, Jiang TX, Widelitz R, Chuong CM. Mapping stem cell activities in the feather follicle. Nature. 2005 Dec 15; 438(7070):1026-9. PMID: 16355227; PMCID: PMC4392896.
      45. Widelitz R. Wnt signaling through canonical and non-canonical pathways: recent progress. Growth Factors. 2005 Jun; 23(2):111-6. PMID: 16019432.
        View in: PubMed
      46. Mayer JA, Chuong CM, Widelitz R. Rooster feathering, androgenic alopecia, and hormone-dependent tumor growth: what is in common? Differentiation. 2004 Dec; 72(9-10):474-88. PMID: 15617560; PMCID: PMC4380229.
      47. Wu P, Jiang TX, Suksaweang S, Widelitz R, Chuong CM. Molecular shaping of the beak. Science. 2004 Sep 03; 305(5689):1465-6. PMID: 15353803; PMCID: PMC4380220.
      48. Widelitz R. Regulating the regulators: routing the Wnt-beta-catenin--Lef signals. J Invest Dermatol. 2004 Aug; 123(2):VIII-X. PMID: 15245452.
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      49. Chang CH, Yu M, Wu P, Jiang TX, Yu HS, Widelitz R, Chuong CM. Sculpting skin appendages out of epidermal layers via temporally and spatially regulated apoptotic events. J Invest Dermatol. 2004 Jun; 122(6):1348-55. PMID: 15175023; PMCID: PMC4386661.
      50. Suksaweang S, Lin CM, Jiang TX, Hughes MW, Widelitz R, Chuong CM. Morphogenesis of chicken liver: identification of localized growth zones and the role of beta-catenin/Wnt in size regulation. Dev Biol. 2004 Feb 01; 266(1):109-22. PMID: 14729482; PMCID: PMC4376314.
      51. Chang CH, Jiang TX, Lin CM, Burrus LW, Chuong CM, Widelitz R. Distinct Wnt members regulate the hierarchical morphogenesis of skin regions (spinal tract) and individual feathers. Mech Dev. 2004 Feb; 121(2):157-71. PMID: 15037317; PMCID: PMC4376312.
      52. Wu P, Hou L, Plikus M, Hughes M, Scehnet J, Suksaweang S, Widelitz R, Jiang TX, Chuong CM. Evo-Devo of amniote integuments and appendages. Int J Dev Biol. 2004; 48(2-3):249-70. PMID: 15272390; PMCID: PMC4386668.
      53. Jiang TX, Widelitz R, Shen WM, Will P, Wu DY, Lin CM, Jung HS, Chuong CM. Integument pattern formation involves genetic and epigenetic controls: feather arrays simulated by digital hormone models. Int J Dev Biol. 2004; 48(2-3):117-35. PMID: 15272377; PMCID: PMC4386648.
      54. Yu M, Yue Z, Wu P, Wu DY, Mayer JA, Medina M, Widelitz R, Jiang TX, Chuong CM. The biology of feather follicles. Int J Dev Biol. 2004; 48(2-3):181-91. PMID: 15272383; PMCID: PMC4380223.
      55. Widelitz R, Jiang TX, Yu M, Shen T, Shen JY, Wu P, Yu Z, Chuong CM. Molecular biology of feather morphogenesis: a testable model for evo-devo research. J Exp Zool B Mol Dev Evol. 2003 Aug 15; 298(1):109-22. PMID: 12949772; PMCID: PMC4382008.
      56. Chuong CM, Wu P, Zhang FC, Xu X, Yu M, Widelitz R, Jiang TX, Hou L. Adaptation to the sky: Defining the feather with integument fossils from mesozoic China and experimental evidence from molecular laboratories. J Exp Zool B Mol Dev Evol. 2003 Aug 15; 298(1):42-56. PMID: 12949768; PMCID: PMC4381994.
      57. Chodankar R, Chang CH, Yue Z, Jiang TX, Suksaweang S, Burrus L, Chuong CM, Widelitz R. Shift of localized growth zones contributes to skin appendage morphogenesis: role of the Wnt/beta-catenin pathway. J Invest Dermatol. 2003 Jan; 120(1):20-6. PMID: 12535194; PMCID: PMC4386651.
      58. Yu M, Wu P, Widelitz R, Chuong CM. The morphogenesis of feathers. Nature. 2002 Nov 21; 420(6913):308-12. PMID: 12442169; PMCID: PMC4386656.
      59. Koh SS, Li H, Lee YH, Widelitz R, Chuong CM, Stallcup MR. Synergistic coactivator function by coactivator-associated arginine methyltransferase (CARM) 1 and beta-catenin with two different classes of DNA-binding transcriptional activators. J Biol Chem. 2002 Jul 19; 277(29):26031-5. PMID: 11983685; PMCID: PMC4386649.
      60. Chuong CM, Patel N, Lin J, Jung HS, Widelitz R. Sonic hedgehog signaling pathway in vertebrate epithelial appendage morphogenesis: perspectives in development and evolution. Cell Mol Life Sci. 2000 Nov; 57(12):1672-81. PMID: 11130174; PMCID: PMC4381998.
      61. Chuong CM, Chodankar R, Widelitz R, Jiang TX. Evo-devo of feathers and scales: building complex epithelial appendages. Curr Opin Genet Dev. 2000 Aug; 10(4):449-56. PMID: 11023302; PMCID: PMC4386666.
      62. Widelitz R, Jiang TX, Lu J, Chuong CM. beta-catenin in epithelial morphogenesis: conversion of part of avian foot scales into feather buds with a mutated beta-catenin. Dev Biol. 2000 Mar 01; 219(1):98-114. PMID: 10677258.
        View in: PubMed
      63. Widelitz R, Chuong CM. Early events in skin appendage formation: induction of epithelial placodes and condensation of dermal mesenchyme. J Investig Dermatol Symp Proc. 1999 Dec; 4(3):302-6. PMID: 10674386.
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      64. Wang WP, Widelitz R, Jiang TX, Chuong CM. Msx-2 and the regulation of organ size: epidermal thickness and hair length. J Investig Dermatol Symp Proc. 1999 Dec; 4(3):278-81. PMID: 10674381.
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      65. Lin SL, Chuong CM, Widelitz R, Ying SY. In vivo analysis of cancerous gene expression by RNA-polymerase chain reaction. Nucleic Acids Res. 1999 Dec 01; 27(23):4585-9. PMID: 10556314; PMCID: PMC148746.
      66. Jiang TX, Jung HS, Widelitz R, Chuong CM. Self-organization of periodic patterns by dissociated feather mesenchymal cells and the regulation of size, number and spacing of primordia. Development. 1999 Nov; 126(22):4997-5009. PMID: 10529418.
        View in: PubMed
      67. Jiang TX, Liu YH, Widelitz R, Kundu RK, Maxson RE, Chuong CM. Epidermal dysplasia and abnormal hair follicles in transgenic mice overexpressing homeobox gene MSX-2. J Invest Dermatol. 1999 Aug; 113(2):230-7. PMID: 10469309.
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      68. Widelitz R, Jiang TX, Chen CW, Stott NS, Jung HS, Chuong CM. Wnt-7a in feather morphogenesis: involvement of anterior-posterior asymmetry and proximal-distal elongation demonstrated with an in vitro reconstitution model. Development. 1999 Jun; 126(12):2577-87. PMID: 10331970.
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      69. Jung HS, Francis-West PH, Widelitz R, Jiang TX, Ting-Berreth S, Tickle C, Wolpert L, Chuong CM. Local inhibitory action of BMPs and their relationships with activators in feather formation: implications for periodic patterning. Dev Biol. 1998 Apr 01; 196(1):11-23. PMID: 9527877.
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      70. Chuong CM, Jung HS, Noden D, Widelitz R. Lineage and pluripotentiality of epithelial precursor cells in developing chicken skin. Biochem Cell Biol. 1998; 76(6):1069-77. PMID: 10392717.
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      71. Lu J, Chuong CM, Widelitz R. Isolation and characterization of chicken beta-catenin. Gene. 1997 Sep 01; 196(1-2):201-7. PMID: 9322759.
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      72. Widelitz R, Jiang TX, Noveen A, Ting-Berreth SA, Yin E, Jung HS, Chuong CM. Molecular histology in skin appendage morphogenesis. Microsc Res Tech. 1997 Aug 15; 38(4):452-65. PMID: 9297695.
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      73. Widelitz R, Jiang TX, Noveen A, Chen CW, Chuong CM. FGF induces new feather buds from developing avian skin. J Invest Dermatol. 1996 Dec; 107(6):797-803. PMID: 8941663.
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      74. Chuong CM, Widelitz R, Ting-Berreth S, Jiang TX. Early events during avian skin appendage regeneration: dependence on epithelial-mesenchymal interaction and order of molecular reappearance. J Invest Dermatol. 1996 Oct; 107(4):639-46. PMID: 8823374.
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      75. Chuong CM, Jiang TX, Yin E, Widelitz R. cDCC (chicken homologue to a gene deleted in colorectal carcinoma) is an epithelial adhesion molecule expressed in the basal cells and involved in epithelial-mesenchymal interaction. Dev Biol. 1994 Aug; 164(2):383-97. PMID: 8045341.
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      76. Widelitz R, Jiang TX, Murray BA, Chuong CM. Adhesion molecules in skeletogenesis: II. Neural cell adhesion molecules mediate precartilaginous mesenchymal condensations and enhance chondrogenesis. J Cell Physiol. 1993 Aug; 156(2):399-411. PMID: 8344994.
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      77. Chuong CM, Widelitz R, Jiang TX. Adhesion molecules and homeoproteins in the phenotypic determination of skin appendages. J Invest Dermatol. 1993 Jul; 101(1 Suppl):10S-15S. PMID: 8100848.
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      78. Chuong CM, Widelitz R, Jiang TX, Abbott UK, Lee YS, Chen HM. Roles of adhesion molecules NCAM and tenascin in limb skeletogenesis: analysis with antibody perturbation, exogenous gene expression, talpid mutants and activin stimulation. Prog Clin Biol Res. 1993; 383B:465-74. PMID: 7509490.
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      79. Widelitz R, Chuong CM. Replication-defective virus infection of feather buds produces a localized region of beta-galactosidase activity. Biochem Biophys Res Commun. 1992 Jul 31; 186(2):1020-4. PMID: 1323281.
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      80. Chuong CM, Ting SA, Widelitz R, Lee YS. Mechanism of skin morphogenesis. II. Retinoic acid modulates axis orientation and phenotypes of skin appendages. Development. 1992 Jul; 115(3):839-52. PMID: 1358597.
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      81. Widelitz R, Duffy JJ, Gerner EW. Accumulation of heat shock protein 70 RNA and its relationship to protein synthesis after heat shock in mammalian cells. Exp Cell Res. 1987 Feb; 168(2):539-45. PMID: 3803453.
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      82. Widelitz R, Magun BE, Gerner EW. Effects of cycloheximide on thermotolerance expression, heat shock protein synthesis, and heat shock protein mRNA accumulation in rat fibroblasts. Mol Cell Biol. 1986 Apr; 6(4):1088-94. PMID: 3785158; PMCID: PMC367618.
      83. Widelitz R, Matrisian LM, Russell DH, Magun BE. Differential effects of lysosomotropic amines and polyamines on processing and biological activity of EGF. Exp Cell Res. 1984 Nov; 155(1):163-70. PMID: 6333348.
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      84. Widelitz R, Magun BE, Gerner EW. Dissociation of 68,000 Mr heat shock protein synthesis from thermotolerance expression in rat fibroblasts. Radiat Res. 1984 Aug; 99(2):433-7. PMID: 6463215.
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