Herein, a case of mixed gonadal digenesis is presented, and the literature is reviewed.

在此，我们提出个混合型性腺发育不良的病例，并做文献回顾。

Primary mediastinal germ-cell tumors (GCTs) without gonadal involvement are rare and can be divided into benign mature teratoma and malignant seminoma or nonseminoma.

摘殖腺体侵犯之原发性纵膈殖芽细胞为罕见之，般分为良性成熟畸胎及包含精细胞和非精细胞在内的恶性。

Using anatomical method, the gonadal development in postembryonic period of Rana chensinensis, which had been migrated from Northeast China, is studied.

摘采用解剖学方法，对南移后的中国林蛙胚胎后期性腺发育进行了观察。