The serum of a patient with pneumonia caused by S. pneumoniae was tested for its ability to aggregate Streptococcus pneumoniae cells, we expect aggregation; however we do not see it because
A) This type of reaction is called a agglutination, and the patient sera did not cause agglutination because of a prozone phenomenon.
B) This type of reaction is called hemagglutination, and the patient sera did not cause agglutination because of a prozone phenomenon.
C) This type of reaction is called LAI, and the patient sera did not cause agglutination because of a prozone phenomenon.
D) This type of reaction is called passive agglutination, and the patient sera did not cause agglutination because of a postzone phenomenon.
Correct Answer:
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Q22: Q23: To increase agglutination, we could Q24: To measure the amount of a small Q25: Q26: The zeta potential is the Q27: Radial immunodiffusion can be used to measure Q28: To determine whether a patient has autoimmune Q29: Regarding the affinity of antibody to antigen, Q31: Agglutination is _ sensitive than precipitation and Q32: A quantitative procedure
A)decrease viscosity of
A)charge on the
A)IgM,
A)Ka
A)Ouchterlony
B)double diffusion gel precipitation reaction
C)single
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