Question

short note on blood group

Answer 1

ABO blood group system, the classification of human blood based on the inherited properties of red blood cells (erythrocytes) as determined by the presence or absence of the antigens A and B, which are carried on the surface of the red cells. Persons may thus have type A, type B, type O, or type AB blood.

Answer 2

Answer :

1] ABO  Grouping

  It is based on plasma or absence of two surface antigens on RBCs , Namely A and B .

• Antigen are chemical that induce response of immune.
• Plasma contains two Antibody - A and B
• Antibodies are proteins produced in response to antigens .
• If bloods with interactive antigens and antibody are mixed, it causes clumping of RBCs
• Person O blood group called Universal donor
• Person AB blood group called Universal Reciever

2] RH    Grouping

• Rhesus [RH] Factor is antigen
• Discovered by landsteiner and wiener {1940} In Rhesus Monkey
• presence of antigen termid as RH-neg and absence RH + neg
• 80% of person are RH +ve
• RH should be match before blood transfusion