Human Immunity and Blood

Leukemia is a cancer of the body's blood-forming tissues, including the bone marrow and the lymphatic system. It involves abnormal production of white blood cells. The other options (lungs, skin, nerves) are affected by different types of cancers or diseases.

People with O negative blood group are called universal donors because their red blood cells lack A, B, and Rh antigens, so they can be transfused to patients of any blood type in emergencies. AB positive individuals are universal recipients.

Red blood cells are formed in the bone marrow through erythropoiesis. This process occurs primarily in the spongy bone tissue of flat bones like the sternum, pelvis, and ribs, not in the liver, kidneys, or heart.

Blood group O individuals lack A and B antigens on their red blood cells, making their blood compatible with all other blood types during transfusion. O negative (lacking Rh factor) is the true universal donor. AB has both antigens, A has only A antigen, B has only B antigen.

Blood group AB individuals have both A and B antigens on their red blood cells and lack anti-A and anti-B antibodies in their plasma. This allows them to receive blood from any group (A, B, AB, or O) without antibody reaction, making them universal recipients. Group O individuals are universal donors, not recipients.

Leukemia is a cancer of blood-forming tissues, primarily the bone marrow and blood cells. It involves the overproduction of abnormal white blood cells that crowd out healthy blood cells.

CMHDB supports the LAC region, which stands for Latin America and Caribbean. This is a specific geographic or regional classification within the CMHDB system's coverage. CRPS and GNA are not valid regions that CMHDB supports.

Quantity of different antibodies found in human milk is in the order of IgA > IgG > IgM.

Corynebacterium granulosum is a bacterium which provokes the immune system to fight against cancer.

Erythrocytes, leucocytes and platelets are collectively called formed elements and they constitute nearly 45 percent of the blood.

O blood can be donated to persons with any other blood group and hence, O group individuals are called universal donors.

Persons with AB group can accept blood from persons with AB as well as the other groups of blood. Therefore, such persons are called universal recipients.

The Rh antigen similar to one present in Rhesus monkeys is observed on the surface of RBCs of majority (nearly 80 percent) of humans.

Eosinophils resist infections and are also associated with allergic reactions.

Lymphocytes and monocytes are the agranulocytes.