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The reduction in white blood cell counts lowers resistance to disease.

白细胞总数的减少会降低对疾病的抵抗力。

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Her white blood cell counts were finally high enough for her to leave the hospital.

她的白血球数终于升到正常水平，她可以出院了。

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T-cell counts remained steady or increased in four of the five patients.

BBC: Cell infected with HIV

Sick animals often have higher white-cell counts as their bodies churn out more ammunition to fight the infection, but those in the Virginian study all came from zoos, and were believed to be hale and hearty.

ECONOMIST: Promiscuity pays

This theory, proposed by Jacobs with collaborators at the Salk Institute, and independently by a Yale University team, was inspired by the stunning finding in the 1990s that adults can sprout new brain cells throughout life, contrary to decades of dogma that adult brain cell counts are fixed.

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