NAVLE（北美执业兽医考题）Day 591

单选题，正确答案是100分，非正确答案为0分，Good Luck！

How much of an increase in serum titer would be expected 3 weeks after an acute infection?

急性感染3周后血清抗体滴度会升高多少？

A - 1.5 times 1.5倍

B - 2 times 2倍

C - 4 times 4倍

D - No change in titer 抗体滴度不变

E - A decrease in titer would be expected 抗体滴度会下降

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