Immune Response in biochemistry
Which of the following is in the lymph nodes of a person battling a cold virus?

Lymph ducts that enter and exit the nodes and Lymph fluid
All of these
Huge numbers of white blood cells
Trapped viruses that have been roaming the body

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Immune Response in biochemistry
Immunological memory is due to

long lived B cells that secrete a specific antibody
short lived macrophage that can recognize specific pathogens
long lived B cells that secrete a specific antigen
short lived helper T cells that signal macrophage to divide

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