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Home >Information for Patients > Dictionary Index

Dictionary of Cancer Terms

View in Spanish: Ig

Ig (I-jee)
A protein that acts as an antibody. Immunoglobulins are made by B cells and plasma cells. An Ig is a type of glycoprotein with two heavy chains and two light chains. Also called immunoglobulin.

Source: National Cancer Institute Dictionary of Cancer Terms, available at www.cancer.gov/dictionary.