[Immunochemical identification and physico-chemical characteristics of specific alpha 2 globulin of human granulocytes].

The antigen which has alpha 2-globulin mobility was identified immunochemically in leukolysate and pus extract. This antigen was localized in polymorphonuclear leukocytes by the immunofluorescence technique in the blood of healthy donors. The alpha 2-globulin of granulocytes (alpha 2GG) is not identical to lactoferrin, lysozyme, granulocyte elastase, fibronectin, fetal hemoglobin, amyloid P-component of the serum. The molecular mass of alpha 2GG is equal to 50 +/- 8 Kd. in the pus extract. The biological role of alpha 2GG is unknown.