title: [Plasma and testicular levels of testosterone and androstenedione during puberty in guinea pigs].
abstract: In male Guinea-pig, hormonal puberty is situated about the 50th day; at this moment production rate of testosterone reaches its maximum during post-natal life. This hormonal puberty period is preceded by a prepuberty period, marked by a sharp linear increase of plasmatic and testicular testosterone levels, which starts on the 16th day, long before spermatozoïds became apparent.
mesh_terms: D000367:Age Factors; D000735:Androstenedione / Q000097:blood / Q000378:metabolism*; D000818:Animals; D006168:Guinea Pigs; D008297:Male; D009929:Organ Size; D012669:Seminal Vesicles / Q000033:anatomy & histology; D013737:Testis / Q000033:anatomy & histology / Q000378:metabolism*; D013739:Testosterone / Q000097:blood / Q000378:metabolism*
chemical_list: D013739:Testosterone; D000735:Androstenedione
vernacular_title: Evolution des teneurs plasmatiques et testiculaires en testostérone et en androstènedione au cours de la puberté chez le Cobaye