Testosterone production by XYY subjects.
A study of plasma concentration (P1T, ng/ml), metabolic clearance rate (MCRT, L/day) and blood production rate (PBT, mg/day) was done on seven XYY subjects of various ages and four pair-matched control XY subjects by a radioinfusion technique of 1,2-3H-testosterone. Although MCRT showed no significant difference between the groups, P1T and PBT were significantly lower (P less than 0.05) in XYY subjects. Therefore, increased aggressive behavior of the XYY subjects can not be attributed  to increased levels or production rates of testosterone.
D000293:Adolescent; D000328:Adult; D001827:Body Height; D001835:Body Weight; D002648:Child; D006801:Humans; D008297:Male; D008875:Middle Aged; D012729:Sex Chromosome Aberrations / Q000097:blood*; D012730:Sex Chromosomes; D013739:Testosterone / Q000096:biosynthesis / Q000097:blood*
D013739:Testosterone