start treating before CD4 count falls below 200

如果CD4细胞计数低于200，开始治疗

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Consider treating if CD4 count is below 350.

如果CD 4细胞计数低于350，考虑开始治疗。

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Procuring equipment, such as CD4 testing technology, for regional laboratories;

为区域实验室采购诸如CD4检测技术的设备；

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The World Health Organization currently recommends that patients begin taking AIDS medicines, called antiretroviral drugs, when symptoms appear or when their CD4 count drops below 200.

VOA: standard.2010.07.21

For example, HIV enters cells of the immune system by binding to a receptor called CD4.

比如,HIV通过与CD4的受体结合,进入到免疫系统细胞中

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The new standard of starting treatment at a CD4 count of 350 has already been embraced by the World Health Organization and the United Nations' UNAIDS program.

VOA: standard.2010.07.21

DeVico's idea was to build a vaccine consisting of gp120 permanently fused to its CD4 receptor.

FORBES: Outsmarting AIDS

But gp120's innards are exposed for 30 minutes or so while the protein is hooked to its human receptor, called CD4, in preparation to invade a cell.

FORBES: Outsmarting AIDS

Prof Jonathan Weber, from Imperial College London, said those on the 48-week regime "end up with much higher CD4 cell count and a much lower viral load".

BBC: Early HIV drugs 'slow virus down'