成熟的无核的红血细胞 hematid
哺乳动物中的红细胞成熟时是无核的，这意味着它们缺乏细胞核。
Erythrocytes in mammals are anucleate when mature, meaning that they lack a cell nucleus.
无核细胞是通过药物、细胞松驰素b把细胞核去掉制备的。
Enucleated cells are prepared by removing cell nuclei in the presence of the drug, cytochalasin b.
本试验证明了TMV - RNA在有细胞核的烟草原生质体中能大量增殖，但在无核的胞质体中却难以增殖。
The experiment has proved that TMV-RNA multiplied vigorously in tobacco protoplasts with cellular nucleuses, while hardly multiplied in cytoplasts separated from nucleuses.
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