IMSE - PRELIM

Study of a host's reactions when foreign substances are introduced into the body.

Foreign substances that induces such an immune response.

The practice of deliberately exposing an individual to material from smallpox lesions.

Discovered a remarkable relationship between exposure to cowpox and immunity to smallpox.

The phenomenon in which to one agent produces protection against another agent.

Discovered the first attenuated vaccine.

Observed that foreign objects introduced into transparent starfish larvae became surrounded by motile cells that attempted to destroy these invades.

Cells that eat cells

Linked the two theories by showing that the immune responses involved both cellular and humoral elements.

Ability of the individual to resist infection by means of normally present body functions.