title: Cell proliferation in human cutaneous squamous cell carcinoma.
abstract: Squamous cell carcinoma (SCC) of the skin, a fairly slow-growing locally invasive tumor that occasionally matastasizes, was studied in 12 patients in vivo with the use of intralesional tritiated thymidine as a marker for cell proliferation kinetics. Analysis of the cell cycle of the germinative population revealed that the duration of S-phase was 12.5 hours; G1-phase, 28.8 hours; mitotic period (M-phase), 2 hours; G-pahse, 6.9 hours; and the total germinative cell cycle, 50.2 hours. The application of cell kinetics to programming chemotherapy for skin cancer with phase-specific cytotoxins was discussed.
mesh_terms: D000970:Antineoplastic Agents / Q000627:therapeutic use; D002294:Carcinoma, Squamous Cell / Q000188:drug therapy / Q000378:metabolism / Q000473:pathology*; D002455:Cell Division; D006801:Humans; D007700:Kinetics; D012878:Skin Neoplasms / Q000188:drug therapy / Q000378:metabolism / Q000473:pathology*; D013936:Thymidine / Q000378:metabolism
chemical_list: D000970:Antineoplastic Agents; D013936:Thymidine