title: In vitro tetraploidy in familial polyposis coli.
mesh_terms: D000293:Adolescent; D000328:Adult; D000368:Aged; D002478:Cells, Cultured; D002648:Child; D005260:Female; D006801:Humans; D007417:Intestinal Polyps / Q000235:genetics*; D008297:Male; D008875:Middle Aged; D011123:Polyploidy; D012867:Skin / Q000648:ultrastructure