Milone M, Iela L, Esposito V, Rastogi R K, Chieffi G
J Endocrinol. 1978 Aug;78(2):165-9. doi: 10.1677/joe.0.0780165.
The concentrations of lipid and protein in the ovary, fat body, liver and plasma of the female frog (Rana esculenta L.) were found to exhibit marked seasonal variations. There was an interesting correspondence between the depletion of lipid in the plasma and fat body and an increased level of lipid in the ovary. It would appear that oestrogenic steroids stimulate and increase the concentrations of lipids in the plasma, whereas pituitary gonadotrophins influence the uptake of lipids by ovarian tissue for vitellogenesis.
已发现雌性食用蛙（Rana esculenta L.）的卵巢、脂肪体、肝脏和血浆中的脂质和蛋白质浓度呈现出明显的季节性变化。血浆和脂肪体中脂质的消耗与卵巢中脂质水平的升高之间存在有趣的对应关系。雌激素似乎会刺激并增加血浆中的脂质浓度，而垂体促性腺激素则影响卵巢组织对脂质的摄取以进行卵黄生成。
