WordReference Random House Unabridged Dictionary of American English © 2026
IgG, [Immunol.]
- Immunologyimmunoglobulin G: a class of circulating antibodies predominant in serum, produced by plasma cells and memory cells in response to pathogens and other foreign substances, able to pass through the placental wall to the fetal circulation to impart immune defense for the period of infancy.
- 1960–65
'IgG' also found in these entries (note: many are not synonyms or translations):