00593nam a22001812  4500001001300000003000500013005001700018008004100035040001800076086002300094245010600117260003000223300000700253500004800260500004400308650002200352710003700374hsl001006315DGPO20170826152550.0170110s1974    dcu          f000 0 eng d  aGPOcGPOdMvI0 aHE 20.3161/A:D 84200aComparative frequency of dominant and recessive markers for drug resistance in Chinese hamster cells.  a[Washington, D.C.,c1974]  av.  aReprinted from JNCI, v.52, no.6, June 1974.  aCRDP Program Historic Shelflist record. 0aCancerxResearch.2 aNational Cancer Institute (U.S.)