in contrast to the `` '' validation '' '' of short-term in vitro genotoxicity assays by concordance with the rodent cancer bioassay , the present report describes the multiple replication of 4 short-term tests with v79 cells ( micronucleus assay , mn ; sister-chromatid exchange , sce ; ouabain resistance . our ; and thioguanine resistance , tgr ) within the same assay system following exposure to each of two genotoxins , ethyl methanesulfonate ( direct acting ) and 7,12-dimethylbenz [ a ] anthracene ( indirect acting ) .
C0007634
9 cel
C0037211
; sister-chromatid exchan