Adiet that contains too much niacin may result in pellagra.
a. true
b. false

The answer to this question is FALSE. Pellagra is a disease where in a person or patient is not receiving sufficient niacin in the body. Pellagra is also known as niacin deficiency. Having red skin lesions, dermatitis, mental confusion, aggresion, and weakness are the symptoms of having pellagra. One of the treatment for pellagra is taking oral medication or treatment to reverse the deficiency in niacin.

Immunization is the introduction of a foreign substance to provoke  the immune response system.  immunizations are the same as vaccinations. it introduces foreign (but dead/ weakened) illnesses to train the body to fight against them. specific viruses and bacteria have specific antigens, antigens act sort of like name tags. these name tags the immune system recognize what's dangerous to the body and what's safe.