the biological activity of potassium dichromate ( k2cr2o7 ) was assayed in v79/ap4 chinese hamster cells by measuring two mutational end points , thioguanine ( tg ) resistance and ouabain ( oua ) resistance , and two non-mutational end points , cytotoxicity and sister chromatid exchanges ( sce ) .
C0007634
cells
C0037211
sister chromatid exchanges