the possible mechanisms involved in the development of transient gynaecomastia during male puberty have been investigated by studying 24 h profiles of circulating androstenedione ( ao ) and testosterone ( t ) and their oestrogen pairs oestrone ( e1 ) and oestradiol ( e2 ) , in eight boys with simple delayed puberty , eleven boys with pubertal gynaecomastia ( three of whom were re-tested after its spontaneous resolution ) , and two normal adult men .
C0039601
testosterone
C0034012
delayed puberty