PMID-sentid Pub_year Sent_text comp_official_name comp_offsetprotein_name organism prot_offset 317533-3 1979 We found mainly an increase of serum IgA, a decrease of IgM, a low level of circulating immune complexes, sometimes IgG type antiglobulin factor (very seldom IgM type, which explains the sero-negativity) seldom antinuclear antibodies; we found also a diminution of T lymphocytes detected by a decrease of E rosette - forming cells and an increase of the lymphocyte subpopulation forming high avidity EA rosettes, whereas the mitogenic response is normal or slightly decreased in the presence of Con A (not significant). sero 187-191 immunoglobulin heavy variable 4-38-2-like Homo sapiens 37-40