98 Mexican Indians were tested for the blood properties A-B-O, A(1)-A(2), M-N, P, Rh'-Rh''-Rh(0)-rh, and Hr. Of the 98 Indians, 90.8 per cent belonged to group 0, 6.1 per cent belonged to A(1), and 3.1 per cent to group B. There were 61.2 per cent of type M, 3.1 per cent of type N, and 35.7 per cent of type MN. Of the 95 Mexican Indians tested with anti-P serum, 21.1 per cent were found to lack...

BACKGROUND In the Netherlands about 50% of whole blood donors return to give blood after an invitation to donate. This study aimed to investigate the characteristics of donor return behaviour and to gain insight into the barriers to blood donation reported by the donors themselves. MATERIALS AND METHODS A total of 4,901 whole blood donors were invited to donate in week 39 of 2009. Barriers me...

The expression ' typing of blood' has been applied loosely to determination of blood groups. It should not be so applied. One groups blood in determining 0, A, B and AB; types blood in determining M, N and MN; Rhesus groups blood in determining the Rh -fand Rh states; and Rhesus types (or Rh types) blood in determining R-h0, Rh', Rh", Rh'Rh", Rh15 Rh2, RhjRh2, and rh (using C-D-E system for a p...

Nothing in the immunological constitution of human red blood cells has grown so luxuriantly such a short time as the details of the Rh antigens (Rh 'factor', a haemagglutinogen, an antigen contained in the red blood cells). Six years ago there was one antigen, Rh, and two characters, (i) Rh positive, Rh, dominant and (w) Rh negative, rh, recessive. To-day there are three antigens and eight type...

BACKGROUND To convert first-time blood donors into regular volunteer donors is a challenge to transfusion services. OBJECTIVES This study aims to estimate the return rate of first time donors of the Ribeirão Preto Blood Center and of other blood centers in its coverage region. METHODS The histories of 115,553 volunteer donors between 1996 and 2005 were analyzed. Statistical analysis was bas...