Search results
Results from the WOW.Com Content Network
The Ii antigen system is a human blood group system based upon a gene on chromosome 6 and consisting of the I antigen and the i antigen. [1] The I antigen is normally present on the cell membrane of red blood cells in all adults, while the i antigen is present in fetuses and newborns. [2]
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 ...
Upload file; Search. Search. Appearance. Donate; ... This category should contain the pages of the 26 human blood antigen systems important in transfusion medicine ...
The most important of these in medicine are the ABO and RhD antigens [7]: 585 but many other blood group systems exist and may be clinically relevant in some situations. As of 2021, 43 blood groups are officially recognized. [8] People who lack certain blood group antigens on their red cells can form antibodies against these antigens. For ...
HLA class II histocompatibility antigen gamma chain also known as HLA-DR antigens-associated invariant chain or CD74 (Cluster of Differentiation 74), is a protein that in humans is encoded by the CD74 gene. [5] [6] The invariant chain (Abbreviated Ii) is a polypeptide which plays a critical role in antigen presentation.
The ABO blood group system is used to denote the presence of one, both, or neither of the A and B antigens on erythrocytes (red blood cells). [1] For human blood transfusions , it is the most important of the 44 different blood type (or group) classification systems currently recognized by the International Society of Blood Transfusions (ISBT ...
[11] With some exceptions, many non-ABO blood group system antigens require a sensitizing event to stimulate antibody production. In other words, the immune system must be exposed to the antigen in order to illicit antibody production. Exposure to antigens can occur through blood transfusion, stem cell/bone marrow transplant, and pregnancy. [4]
A hospital information system (HIS) is an element of health informatics that focuses mainly on the administrational needs of hospitals.In many implementations, a HIS is a comprehensive, integrated information system designed to manage all the aspects of a hospital's operation, such as medical, administrative, financial, and legal issues and the corresponding processing of services.