HUMAN SKIN GRAFTED NUDE MOUSE 265 7. R. M. Handjani-Vila, A. Rabier, B. Rondot, and G. Vanlerberghie, Dispersion of lameIlar phases of nonionic lipids in cosmetic products, Int. J. Costa. Sci., 1, 303-319 (1979). 8. N. D. Reed and D. D. Manning, Long-term maintenance of psoriatic human skin on congenitally athymic (nude) mice, Proc. Soc. Exp. Bio/. Med., 143, 350-356 (1973). 9. J. Rygaard, Skin grafts in nude mice, Acta Path. Microbio/. Scand., 82, 105-112 (1974). 10. G. G. Krueger, D. D. Manning, J. Malouf, and B. E. Ogden, Long-term maintenance of psoriatic human skin on congenitally athymic (nude) mice, J. Invest. Dermato/, 64, 307-312 (1975). 11. R. A. Briggaman and C. E. Wheeler, Jr., Lameliar itchthyosis: Long-term graft studies on congen- tially athymic nude mice, J. Invest. Dermato/., 67, 567-576 (1976). 12. D. D. Manning, N. D. Reed, and C. F. Shaffer, Maintenance of skin xenografts of widely divergent phylogenetic origin on congenitally athymic (nude) mice.,J. Exp. Med., 138, 488-494 (1973). 13. G. G. Krueger, D. A. Chanbers, andJ. Shelby, Epidermal proliferation of nude mouse skin, pigskin, and pig skin grafts,J. Exp. Med., 152, 1329-1359 (1980). 14. G. G. Krueger, D. A. Chambers, and N. J. Shelby, "Comparative Effective of Proliferative Agents on Nude Mouse Skin, Pig Skin and Pig Skin Xenogeneic on Nudes," in Proc. Third Int. Workshop on Nude Mice, (Gustav Fisher, New York, Stuttgart, 1982), Vol. 2, pp 435-445. 15. G. G. Krueger, and J. Shelby, Biology of human skin transplanted to the nude mouse: I. Response to agents which modify epidermal proliferation, J. Invest. Dermato/., 6, 501-511, 1981. 16. W. G. Reifenrath, E. M. Chellquist, E. A. Shipwash, W. W. Jederberg, and G. G. Krueger, Per- cutaneous penetration in the hairless dog, weanling pig and grafted athymic nude mouse evaluation of models for predicting skin penetration in man. Brit. J. Dermato/., Supp. 27, 123-135, III, 1984. 17. O.K. Jacobi, U.S. Patent 3,231,472 (Jan. 25, 1966). 18. E. M. Chellquist, W. G. Reifenrath, E. A. Shipwash, and W. W. Jederberg, Animal models for determining percutaneous absorption of chemicals, Abstract 67, 35th Annum Mtg. Acad. Pharm. Sci., Miami Beach, Florida, November 13-17, 1983. 19. H. Schaefer, A. Zesch, and G. Stuttgen, Skin Permeability, (Springer-Verlag, New York, 1982), pp 548, 601. 20. R. H. Rigdon and A. A. Packchanian, Histologic study of the skin of congenitally athymic (nude) mice, Tex. Rep. on Biol. and Med, 32 (#384), 713-723, 1974. 21. J. B. Wahlberg and G. Swarbeck, The effect of urea and lactic acid on the percutaneous absorption of hydrocortisone, Acta Derre. Venereol. (Stockh), 53, 207-210, 1973. 22. W. Q. Liang and R. V. Petersen, unpublished data.