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![Histology of Exocrine Gland [Epithelium 7 of 7]](https://i.ytimg.com/vi/NkU7YJ7eYd0/maxresdefault.jpg)
Histology - four layers of trachea
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14,064 意见·
01/17/24
the short video will describe four layers of connective tissue. Please see disclaimer on my website. www.academyofprofessionals.com
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