the growth and development of the nervous system including the brain and spinal cord.

proteins produced by the immune system to fight specific bacteria, viruses, or other antigens.

foreign substances (e.g. bacteria or viruses) in the body that are capable of causing disease. The presence of antigens in the body triggers an immune response, usually the production of antibodies.

very small, single-celled life-forms that can reproduce quickly.

a widespread outbreak of an infectious disease; many people are infected at the same time.

the disease is gone "forever," and control measures are no longer necessary for example smallpox.

Seizures

a group of organisms that lack chlorophyll (which helps plants to make food). They are unable to create their own food and must get their nutrients from the environment around them.

the complete set of genetic information of an organism including DNA and RNA.

Response