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If you suspect major deficiency of antibodies in a person to which of the following would you look for confirmatory evidence?

1. serum globulins
2. fibrinogen in the plasma
3. haemocytes
4. serum albumins

Correct answer: serum globulins

Solution

Antibodies are immunoglobulins, and immunoglobulins are part of the serum globulin fraction. A major antibody deficiency would therefore be supported by low serum globulins rather than albumin, fibrinogen, or blood cells.

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