Abstract

Biochemical and genetic studies on xeroderma pigmentosum are reviewed under the following headings: clinical features of xeroderma pigmentosum; karyotype; cell killing and host cell reactivation after irradiation or exposure to chemical carcinogens; SV40 transformation of xeroderma pigmentosum cells; biochemical defects in the common and de Sanctis-Cacchione forms of xeroderma pigmentosum; cell hybridization and complementation groups; biochemical defects in the xeroderma pigmentosum variant and the role of caffeine in DNA repair; DNA repair in xeroderma pigmentosum heterozygotes; response of xeroderma pigmentosum cells to various mutagens and chemical carcinogens; other high and low repair diseases; and possible significance of DNA repair in theories of aging and carcinogenesis. (HLW)

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