Prokaryotes lack organelles such as nucleoli, mitochondria, plastids, Golgi apparatus, and do not exhibit cyclosis.
原核生胞器,如核仁、粒、质、高等,不出现胞质环流。
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In prophase 2, we see the disappearance of the nucleoli and the nuclear envelope again as well as the shortening and thickening of the chromatids.
在 2,们看到核膜消失,色单体变短变厚。
Generally speaking, malignant cells are irregularly-shaped with darkly staining nuclei, enlarged nucleoli, and produce abnormal keratin that look like pearls - so they're called keratin pearls.
般来说,恶性肿瘤细胞形态各异且细胞核,有增大的核仁,还会产生珍珠样的异常角质——称作角化珠。
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