Inner cells in the integument differentiated into integument tapeta.
珠被内层细胞特化为珠被绒毡层。
The epidermal cells in the integument became flattened, smaller in size, and without nuclei.
体壁皮细胞缩小呈扁平形，无细胞核，连成线状，有断裂；
The epidermal cells in the integument became flattened, smaller in size, and without nuclei.
体壁皮细胞缩小呈扁平形，无细胞核，连成线状，有断裂；
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