NAME DATE; _______________, 2012 Lab Instructor's Name : __________________________ Module #6 Lab Worksheet 1. Regarding the macroscopic tube agglutination test, define the function of each of the following: a) killed typhoid bacilli b) patient's serum c) normal saline 2. Define the terms agglutination and titre. 3. What was the titer of the macroscopic tube agglutination test indicated in the example? 4. What would you conclude from a test where the control tube containing only bacteria and saline agglutinates? Why? 5. In serological testing of a patient to determine the cause of disease, one usually obtains at least two serum samples--an acute sample (during the acute phase of illness) and a second serum sample drawn 7 days later. Assuming that you are measuring antibodies against a specific microbe, Mycoplasma pneumoniae: a) What does a rising antibody titer to Mycoplasma pneumoniae indicate? b) What does a low stable antibody titer (<4) to Ab. titre M. pneumoniae indicate as to the cause of disease?
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