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Enzyme-Linked Immunosorbent Assay (ELISA)

A biochemical technique to detect the presence of an antibody or an antigen in a sample. It is commonly used to detect infectious agents.

Enzymes

The many proteins produced by organisms to act as biochemical catalysts. Enzymes are the mediators of cell metabolism.

Epidermal Growth Factor Receptor (EGFR)

A cell-surface receptor that is activated when bound by epidermal growth factor. Genetic mutations that lead to EGFR overexpression or overactivity have been associated with a number of cancers.

Extracellular Proteins

Proteins found outside of a cell.