SummaryThe presence of progestins and androgens in the foetal gonad of the zebra and the absence of these hormons in the foetal horse reflect perhaps a significant species difference.ZusammenfassungFeinstruktur der Gonaden und Steroidhormone beim fetalen ZebraDie fetalen Gonaden des Zebras enthalten Progestine und Androgene. Das ist beim Pferd nicht so. Der Unterschied beruht moglicherweise auf einem Artunterschied.

Journal Article Treatment of Precocious Sexual Development by Medroxyprogesterone Acetate Get access Zvi Laron, Zvi Laron Dept. of Pediatrics (Sharon Hospital) and Endocrine Lab., Beilinson Hospital, the Rogoff Med. Res. Inst. of Tel Aviv University, Petah Tikva, Israel Search for other works by this author on: Oxford Academic Google Scholar Gideon Rumney Gideon Rumney Dept. of Pediatrics (Sharon Hospital) and Endocrine Lab., Beilinson Hospital, the Rogoff Med. Res. Inst. of Tel Aviv University, Petah Tikva, Israel Search for other works by this author on: Oxford Academic Google Scholar Acta Endocrinologica (Norway), Volume 49, Issue 4_Supplement, Aug 1965, Page S27, https://doi.org/10.1530/acta.0.049S027 Published: 01 August 1965

ABSTRACT Weekly injections of 17α-hydroxy-6α-methylprogesterone acetate to three patients with gonadal dysgenesis exhibiting high urinary gonadotrophins and one girl with marked enlargement of breasts and high urinary oestrogens, led to suppression of both urinary gonadotrophins and oestrogens in two patients and of oestrogens alone in the third case. There was no significant effect on the urinary 17-ketosteroids or 17-hydroxycorticosteroids.