the effects of 5-trifluoromethyluracil ( f3thy ) , 5-trifluoromethyl-2'-deoxyuridine ( f3dthd ) , f3dthd-5'-p , and f3dthd-5'-methylphosphonate on the growth of hela cells , novikoff hepatoma cells , l5178y mouse leukemia cells , and on the replication of vaccinia virus in hela cells have been determined .
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growth of
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cells