title: Quantitation of Ina blood group antigens.
abstract: Using indirect immunoradiometric assay the mean (+/- SD) number of Ina antigenic sites per erythrocyte was estimated to be 73857 +/- 18285 in normal adults and 20142 +/- 8571 in newborn infants. Pregnant women showed temporary reduction in Ina antigens (28144 +/- 13857), which returned to normal levels, 3-6 months after delivery. Ina antigens were shown to be denatured by papain treatment of red cells, proving it to be of glycoprotein nature.
authors.affiliation: Institute of Immunohaematology ICMR, Bombay.
authors.forename: A N
authors.initials: AN
authors.lastname: Dumasia
authors.forename: S C
authors.initials: SC
authors.lastname: Gupte
mesh_terms: D000328:Adult; D001789:Blood Group Antigens / Q000276:immunology*; D004912:Erythrocytes / Q000276:immunology*; D005260:Female; D006801:Humans; D015592:Immunoradiometric Assay; D007231:Infant, Newborn; D008297:Male; D011247:Pregnancy; D012204:Rh-Hr Blood-Group System / Q000276:immunology*
chemical_list: D001789:Blood Group Antigens; D012204:Rh-Hr Blood-Group System