A haplotype is a group of genes that tend to travel through the generations as a block.
单体型是一组这样的基因，它们在遗传过程中能够以一个整体得到遗传。
Primates infected with the simian version of HIV are protected from developing AIDS by several genes which code for proteins in the immune system that slow or block retroviral reproduction.
被类人猿hiv感染的灵长类动物可以在免疫系统中合成几种基因编码的蛋白，减缓或阻止逆转录病毒增殖，从而保护自己。
But lung cancer cells sabotage the expression of these same genes to block assault from chemotherapy drugs.
不过，肺癌细胞则影响这些基因的表达，阻断化疗药物的作用。
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