title: Increase in the number of lymphocytes secreting IgG following blood transfusion.
abstract: A sequential change in the number of circulating immunoglobulin (Ig) secreting cells of each Ig class following blood transfusion was studied using a reverse hemolytic plaque assay. The subjects studied were in two main groups, immunologically normal individuals and patients with malignant lymphoma or multiple myeloma who are, presumably, immune incompetent. A consistent increase in circulating IgG-secreting cells, along with either an earlier or simultaneous increase in IgM-secreting cells, was observed following blood transfusion in the immunologically normal individuals. An increase in IgA-secreting cells was also observed, but at a minimal magnitude. Such an increase was not apparent in patients with lymphoma or myeloma. The possible use of blood transfusion as a means of "challenging and checking" for the state of immune responsiveness in vivo is discussed.
mesh_terms: D000328:Adult; D001803:Blood Transfusion; D005260:Female; D006462:Hemolytic Plaque Technique; D006801:Humans; D007070:Immunoglobulin A / Q000378:metabolism; D007074:Immunoglobulin G / Q000378:metabolism*; D007075:Immunoglobulin M / Q000378:metabolism; D008214:Lymphocytes / Q000276:immunology*; D008223:Lymphoma / Q000276:immunology; D008297:Male; D008875:Middle Aged; D009101:Multiple Myeloma / Q000276:immunology
chemical_list: D007070:Immunoglobulin A; D007074:Immunoglobulin G; D007075:Immunoglobulin M