正常细胞在体外培养时表现为贴壁生长和汇合 成单层后停止生长的特点,即接触抑制现象(contact inhibition),而肿瘤细胞接触抑制缺失,即使堆积成群 仍然可以生长,从而使恶性肿瘤迅速生长增大。
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除了废除声名狼藉的君主制,他们还要与基于等级制度的歧视,对部族的掠夺和对失去土地的劳动者的剥削等等不良现象作斗争。
Besides scrapping a discredited monarchy, they would fight caste-based discrimination, the deprivation of tribal groups and the exploitation of landless labourers.
她还警告到,这种‘人间蒸发’的老年人现象只不过是反应户口登记制问题的冰山一角而已。
She warns that the missing-seniors Revelations are just the tip of the iceberg.
方法:通过实行“实名制”、“预约制” 挂号方式,防止倒号现象的发生。
Methods:Through the introduction of "real-name system", "appointment system" registration and the prevention of the occurrence of the phenomenon of trade registrations.
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