At this stage the gonad is indifferent. 此時，不能辨認性別而稱之為未分化性腺。
The effect of cadmium on the female gonad was shown to have the extrous cycle delayed and the proportion of atresic follicle increased. 鎘的雌性性腺生殖毒性可表現為動情周期的明顯延長，卵巢細胞生長發育過程的明顯障礙。
This doctor is experienced in treating gonad diseases. 這位醫生對治療生殖腺疾病非常有經驗。