胚已经具有了表皮、皮层、中柱的分化，细胞小，染色质浓厚。
Embryo cells are small, chromatin is dense, have already differentiation on epidermis, cortex and central cylinder.
SSCC分化较低，癌细胞较小，核染色质呈颗粒状，细胞形态上与SCLC有相似之处。
SSCC low differentiation, cancer cells small, granular nuclear chromatin, cell shape is similar with the SCLC.
细胞的分化是一个动态的过程，带动激活和抑制特定的基因组，基因组转录活性和非活性染色质域的划分。
Cellular differentiation is a dynamic process driven by activation and repression of specific sets of genes, partitioning the genome into transcriptionally active and inactive chromatin domains.
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