The correct statement about antibody count indicating suppressed immune system is they still had a low antibody count two weeks later.
Humoral immunity is provided to the body through antibodies produced from plasma cells. The latter are secreted by B lymphocytes, which are a type of white blood cells.
The antibody count is observed to decrease after illness or infection. However, it is released again when the body gets infected. But the persistent low antibody count during the illness or infection needs to be rectified.
There are certain situations when immune system is suppressed such as grafting or other medical procedures. Cancer and AIDS are the medical conditions that naturally suppress the immune system, holding the potential to lethality.
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