The secondary lymphoid organs include the _____, lymph nodes, tonsils, appendix and Peyer patches in the small intestine.
The secondary lymphoid organs include the _____, lymph nodes, tonsils, appendix and Peyer patches in the small intestine.
下列关于空肠与回肠两者相较的叙述,何者为误?() A: 空肠管径较大 B: 空肠管壁较薄 C: 环状皱襞空肠中较明显 D: 集合淋巴结(Peyer’spatch)主要位于回肠
下列关于空肠与回肠两者相较的叙述,何者为误?() A: 空肠管径较大 B: 空肠管壁较薄 C: 环状皱襞空肠中较明显 D: 集合淋巴结(Peyer’spatch)主要位于回肠
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