“We often remark on how healthy or unhealthy someone looks, but it can be very difficult to say precisely how we know this, ” said lead researcher Vinet Coetzee.

主要研究人员Vinet Coetzee说：“我们经常评论某人多么健康或多么不健康，但很难详细说出健康与不健康的界定。”

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'That goose looks very healthy. Its hair is rich. It would be nice if we could raise such a great goose in our depression.'

那只鹅看起来很健康。它的毛发很值钱。在我们沮丧的时候，养一只鹅能让我们开心了。

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Incidence of immune cells, he is only more than 40, now only 26, while the normal level at 500 or more, although it is now looks very healthy, but once the infection is very dangerous.

发病时他的免疫细胞只有40多个，现在只有26个，而正常人水平都在500个以上，虽然现在看上去都很健康，但一旦感染就非常危险。

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