This variability means that a small deletion on the CCR5 gene.
这种变异是指CCR5基因上一小段缺失。
Human beings are marvelous "deletion creatures." Of all the things we could be noticing at any given time, there is only a small number we can consciously focus on.
人类是奇妙的“删除动物”。在任何确定的时段中，在我们能看到的所有事物中，我们只是本能地关注一小部分。
Microdeletion — a chromosomal deletion that is too small to be seen under the microscope. See also contiguous gene syndrome.
无法用显微镜观察到的较小的染色体缺失。参见邻接基因综合征。
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