以下为句子列表：
英文: Cells take diverse shapes. These are epithelial cords of block-like cells. As always, nucleoli and nuclear heterochromatin stain darkly with hematoxylin.
中文: 不同形态的细胞。这些是立方细胞排列成的上皮索状结构。总之，核仁与细胞核中的异染色质被苏木精染成深色。
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英文: Euchromatin is thought to be actively involved in transcription and therefore protein synthesis, while heterochromatin is inavtive.
中文: 异染色质由于折叠压缩程度高，所以被碱性染料染色时着色较深。
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