Macroglobulin is derived from
Ref Robbins 9/e p191 alpha-2-Macroglobulin (a2M) is a large (720 KDa) plasma protein found in the blood. It is mainly produced by the liver, and also locally synthesized by macrophages, fibroblasts, and adrenocoical cells. In humans it is encoded by the A2M gene
B cells
T cells
Both
NK cells
General anatomy