That which shows the "normal" condensation pattern is called euchromatin . 那些表现“正常的”浓缩格式的部分叫做常染色质。
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Zones of loosely arranged euchromatin are located mainly in the center of the nucleus . 疏松的染色质区带主要位于细胞核的中心部。
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Their nuclei are pale and vesicular , containing mainly unstained euchromatin 细胞核染色苍白呈空泡状，应为主要含有的是不着色的常染色质。
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Euchromatin is thought to be actively involved in transcription and therefore protein synthesis , while heterochromatin is inavtive 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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