其中的一个区域，定位在表面的棘突上，是HIV病毒用来接触免疫细胞并且感染它们时使用，叫做CD 4结合位点。
One such area, located on the surface spikes used by HIV to attach to immune system cells and infect them, is called the CD4 binding site.
结果表明：镉可使大鼠红细胞由正常的园盘状变成棘形、口形、靶形、盔形、点状等。
Results showed that cadmium can change the RBC of rats from normal disc erythrocyte into acanthocyte, stomatocyte, target and helmet cells.
结果表明：镉可使大鼠红细胞由正常的园盘状变成棘形、口形、靶形、盔形、点状等。
Results showed that cadmium can change the RBC of rats from normal disc erythrocyte into acanthocyte, stomatocyte, target and helmet cells.
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