HLA stands for which biological marker?

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Multiple Choice

HLA stands for which biological marker?

HLA refers to a group of proteins on the surface of most cells that help the immune system tell self from non-self. It stands for Human Leukocyte Antigen. Leukocytes are white blood cells, and an antigen is anything the immune system can recognize as foreign. These HLA proteins are encoded by a gene cluster on chromosome 6 and form the human leukocyte antigen system, which is the human version of the major histocompatibility complex. Their main roles include presenting peptide fragments to T cells and guiding immune responses, which is why HLA typing is crucial for transplantation matching and understanding immune-related risks. The other options mix up terms (lymphocyte instead of leukocyte, or use “antigenic marker” or “hematologic”), but the established name is Human Leukocyte Antigen.

HLA refers to a group of proteins on the surface of most cells that help the immune system tell self from non-self. It stands for Human Leukocyte Antigen. Leukocytes are white blood cells, and an antigen is anything the immune system can recognize as foreign. These HLA proteins are encoded by a gene cluster on chromosome 6 and form the human leukocyte antigen system, which is the human version of the major histocompatibility complex. Their main roles include presenting peptide fragments to T cells and guiding immune responses, which is why HLA typing is crucial for transplantation matching and understanding immune-related risks. The other options mix up terms (lymphocyte instead of leukocyte, or use “antigenic marker” or “hematologic”), but the established name is Human Leukocyte Antigen.

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