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In an Agglutination Test, Eight Serial Dilutions to Determine Antibody

Question 11

Multiple Choice

In an agglutination test, eight serial dilutions to determine antibody titer were set up. Tube #1 contained a 1:2 dilution; tube #2, a 1:4, etc. If tube #6 is the last tube showing agglutination, what is the antibody titer?


A) 6
B) 64
C) 1:6
D) 1:32
E) 32

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