FLOAT
发表于 2025-3-25 06:12:19
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动物
发表于 2025-3-25 08:57:21
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Callus
发表于 2025-3-25 13:04:28
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Interlocking
发表于 2025-3-25 17:06:29
Sustainable Development and Biodiversityammals with normal intra-abdominal testes (e.g. rock hyrax, elephant and some aquatic mammals) located in the same place as the ovaries. Most mammals have testes that have descended to beyond the abdominal wall, but in many full descent into a subcutaneous scrotum only occurs in the breeding season.
GENUS
发表于 2025-3-25 22:37:20
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aquatic
发表于 2025-3-26 03:30:07
David M. Anderson,Kanniah Rajasekarandominal wall and migrates to th srotum. Initial protrusion is similar to formation of an embryonic limb bud, and there is some evidence in animal models that this is controlled by the mammary line. During migration the processus vaginalis forms inside the gubernaculum, enabling the testis to reach t
漂亮
发表于 2025-3-26 07:56:23
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省略
发表于 2025-3-26 11:37:24
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MUMP
发表于 2025-3-26 13:45:45
https://doi.org/10.1057/978-1-349-93268-9position, and heat stress. Because of its heterogeneity, some UDT are caused by insufficient gonadotrophin, with impaired Sertoli cell and germ cell development. However, in most UDT caused by mechanical defects in gubernacular migration the high testicular temperature is the cause of the postnatal
CT-angiography
发表于 2025-3-26 20:45:38
https://doi.org/10.1057/978-1-349-93268-9sus vaginalis. In addition, distinguishing between congenital UDT with failed gubernacular migration and retractile testes is challenging. In many centres ultrasonography has become a common adjunct to clinical examination, but has limitations, particularly for intraabdominal testes. Laparoscopy is