Weakened microbes that stimulate the immune system to produce antibodies used to fight future invasions by the same microbe. Example: chicken pox, measles, small pox

Compounds that block the growth and reproduction of bacteria.

A condition in which a person's immune system is overly sensitive to environmental substances that are normally harmless.

A protein, produced by the immune system that either attacks invading pathogens or marks them for killing.

A Substance made of weakened, killed, or partial pathogens are designed to protect the body from future invasions of that pathogen.

A weakened or dead virus can act as a:

Which best describes the relationship between antibodies and antigen?

immunity that occurs when a person's own immune system produces antibodies in response to the presence of a pathogen when a person gets sick

immunity in which antibodies are given to a person rather than produced within the person's own body

Which immunity is present at birth and passed from the mother to the baby through milk and the placenta?

When the body launches an immune response against its own cells