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hh, [1] or the Bombay blood group, is a rare blood type. This blood phenotype was first discovered in Bombay by Dr. Y. M. Bhende in 1952. It is mostly found in the Indian subcontinent ( India , Bangladesh , Pakistan ) and Iran .
Blood type (also called a blood group) is a classification of blood, based on the presence and absence of antibodies and inherited antigenic substances on the surface of red blood cells (RBCs). These antigens may be proteins, carbohydrates, glycoproteins, or glycolipids, depending on the blood group system.
The Indian blood group system (In) is a classification of blood based on the presence or absence of inherited antigens that reside within the CD44 molecule that is expressed on the surface of blood cells. [1] It is named so because 4% of the population in India possess it. [2]
It is one of the pioneer organisations which helps patients worldwide with a rare blood group "Bombay Blood Group" (also known as hh blood group). [4] Sankalp India Foundation has done extensive work in the areas of quality and safety of blood donation camps, studying the extent of non-compliance [5] and adverse donor events [6] blood banks in ...
A complete blood type would describe each of the 45 blood groups, and an individual's blood type is one of many possible combinations of blood-group antigens. [3] Almost always, an individual has the same blood group for life, but very rarely an individual's blood type changes through addition or suppression of an antigen in infection, malignancy, or autoimmune disease.
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The term human blood group systems is defined by the International Society of Blood Transfusion (ISBT) as systems in the human species where cell-surface antigens—in particular, those on blood cells—are "controlled at a single gene locus or by two or more very closely linked homologous genes with little or no observable recombination between them", [1] and include the common ABO and Rh ...
This antigen along with other blood group antigens was used to identify the Basque people as a genetically separate group. [50] Its use in forensic science is under consideration. [51] The Andaman and Nicobar Islands, part of India, were originally inhabited by 14 aboriginal tribes. Several of these have gone extinct.