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1·The nuclear lamina is composed mostly of lamin proteins.

核膜主要由层粘蛋白构成。

2·Lamin proteins are thought to determine the size and shape of cell nuclei and to be involved in nuclear stability, chromatin structure and gene expression.

型核纤层蛋白决定细胞核的大小及形状，与细胞核的稳定性、染色质结构以及基因表达有关。