resorptive

The midgut gland cell differentiation occurs at Z2, There are 4 types of cells, i. e., embryonic cell (E-cell), fibrillar cell (F-cell), blister cell (B-cell) and resorptive cell(R-cell).

中肠腺小管皮在Z2期细胞已有了分化，由4类细胞组成，胚细胞(E细胞)、纤维细胞(F细胞)、泡状细胞(B细胞)和吸收细胞(R细胞)。