immunoglobulin G(redirected from Igg deficiency)
Also found in: Thesaurus, Medical, Encyclopedia.
n. Abbr. IgG
1. The most abundant class of antibodies in blood and tissue, serving to promote phagocytosis of pathogens, neutralize toxins, and activate the complement system. Immunoglobulin G antibodies are the only antibodies that pass from mother to fetus through the placenta.
2. An antibody of this class.
American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
Switch to new thesaurus
|Noun||1.||immunoglobulin G - one of the five major classes of immunoglobulins; the main antibody defense against bacteria|
Based on WordNet 3.0, Farlex clipart collection. © 2003-2012 Princeton University, Farlex Inc.