$A$ large bean-shaped organ that contains lymphocytes and phagocytes is:

$A$ - Acid in the stomach and saliva in the mouth are examples of physiological barriers.
$R$ - Tears from eyes are an example of a physical barrier.

Which of the following is not an autoimmune disease?

Triple antigen vaccine is not used for

According to the Oxford English Dictionary,a disease is defined as:

The percentage of the population suffering from serious mental illness is: (in $\%$)