mayo clinic 說對有些人是正常的:

回答: 尋找白細胞降低的原因dudaan2017-05-14 14:02:08

"Some people who are otherwise healthy have white cell counts that are lower than what's usually considered normal, but which are normal for them."

from http://www.mayoclinic.org/symptoms/low-white-blood-cell-count/basics/definition/sym-20050615?

 

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