title: A sensitive method to measure PHA-induced cytotoxicity to adherent target cells using [3H]uridine as a terminal label.
abstract: This paper describes a modification of the PHA-induced cytotoxicity test of human peripheral blood lymphocytes against a tumour-derived adherent cell line (HeLa), in which the surviving target cells are labelled with [3H]uridine at the end of the assay. There is a direct correlation between [3H]uridine incorporation and the number of adherent target cells. The test proves to be very sensitive at low effector; target cell ratios. Frozen stored cells can be used in this system, a particular advantage because of the possibility of increasing the reproducibility of the assay by using the same batch of cryopreserved lymphocytes as a reference standard in each experiment. PHA-induced cytotoxicity was mainly found in the T cell enriched fraction.
mesh_terms: D000293:Adolescent; D000328:Adult; D002448:Cell Adhesion; D003601:Cytotoxicity Tests, Immunologic / Q000379:methods; D005615:Freezing; D006367:HeLa Cells / Q000276:immunology / Q000378:metabolism; D006801:Humans; D008875:Middle Aged; D010835:Phytohemagglutinins / Q000494:pharmacology*; D013601:T-Lymphocytes / Q000276:immunology; D013936:Thymidine; D014529:Uridine
chemical_list: D010835:Phytohemagglutinins; D013936:Thymidine; D014529:Uridine