陰莖骨

Ida is female because she doesn't have a baculum, or penis bone. 愛達(dá)是雌性,因為她沒有陰莖骨。

The exine of all species can be distinguished by itstectum, baculum and foot-layer. 透射電鏡下觀察,5種植物花粉外壁均可分為覆蓋層、柱狀層和基層。

The study shows a connection between OHC levels and reduced size of the uterus in female bears and reduced size of the testis and baculum in males. 這項研究顯示，OHC濃度與母熊子宮及公熊的睪丸和陰莖骨變小有關(guān)。

A large baculum, or penis, is critical for successful mating in an arctic climate, the researchers note, and even slight decreases may interfere with reproduction. 研究人員指出，一個大陰莖骨（或陰莖），對于要在北極天候下成功交配而言至關(guān)重要，即使微幅變小都可能妨礙到繁殖功能。

A positive relationship between baculum length and prolonged intromission patterns in mammals 哺乳動物陰莖骨長度與延長性插入模式之間存在正相關(guān)的關(guān)系