MICROANATOMY

Detailed explanation-1: -blood group A – has A antigens on the red blood cells with anti-B antibodies in the plasma. blood group B – has B antigens with anti-A antibodies in the plasma. blood group O – has no antigens, but both anti-A and anti-B antibodies in the plasma. blood group AB – has both A and B antigens, but no antibodies.

Detailed explanation-2: -Blood group antigens are found on the surface of red blood cells and are ignored by the immune system. But antigens of another blood type will be seen as foreign, and attacked by antibodies. Blood group A has A antigens on the red blood cells with anti-B antibodies in the plasma.

Detailed explanation-3: -The antigens present on our own red blood cells in our own body are termed self-antigens and do not generate an antibody response. Therefore, the answer is a. Important self-antigens on the surface of red blood cells are the A and B antigens of the ABO blood system.

Detailed explanation-4: -A1 and A2 are major subgroups of blood group A. These are differentiated by the reaction of anti-A1 lectin with A1 cells. Rarely, significance of weaker variants like A2, A3 and Ax is important as they may cause haemolytic transfusion reactions [11].

Detailed explanation-5: -Red blood cell antigens determine your blood group The antigens expressed on the red blood cell determine an individual’s blood group. The main two blood groups are called ABO (with blood types A, B, AB, and O) and Rh (with Rh D-positive or Rh D-negative blood types).