各段主细胞均具有分泌细胞和吸收细胞的超微结构特征。
The principal cell shows the ultrastructural characteristics of secretion and absorption.
两种蟹肝胰腺均由肝小管的单层柱状上皮构成,在光镜下可以区分出分泌细胞、吸收细胞、胚性细胞。
The hepatopancreas of the two crabs were built with simple columnar epithelia. Secreting, absorbing and embryonic cells could be distinguished.
细胞会很快开始吸收水份。
If we injected it into a muscle let's say, and your muscle cells took up this plasmid.
比如说,如果我们将其注射入肌肉内,则肌肉细胞就可以吸收这些质粒
One of the ways they can do this is if there's no space in between these cells.
要完成吸收过程,肠道上皮细胞之间必须没有空隙
It's these cells that are sitting at the surface here that are responsible for determining what becomes part of us and what stays outside.
位于肠道表面的细胞,决定了,吸收哪些分子而排出哪些分子
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