A blood bank is a center where blood gathered as a result of blood donation is stored and preserved for later use in blood transfusion.

Blood donation is the process of voluntarily giving blood, either for storage in a blood bank or for immediate use by a patient.

Bone marrow is a soft, gelatinous tissue found within the hollow spaces of bones.

Hepatitis is an inflammatory disease of the liver, characterized by the presence of inflammatory cells in the liver tissue.

HIV, or Human Immunodeficiency Virus, is a retrovirus that attacks the immune system of humans, leading to the acquired immunodeficiency syndrome (AIDS).

Kidney transplant or renal transplant is the organ transplant of a kidney into a patient with end-stage kidney disease (ESRD).

Leukemia is a type of cancer that affects the blood cells and bone marrow.

Organ transplantation is the process of surgically removing an organ from one person (the donor) and placing it into another person (the recipient) who is in need of that organ.