| AAA | abdominal aortic aneurysm/aneurysmectomy; acne-associated arthritis; acquired aplastic anemia; acute... |
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| AAC | antibiotic-associated [pseudomembranous] colitis; antimicrobial agent-induced colitis; augmentative ... |
| AAD | acute agitated delirium; alloxazine adenine dinucleotide; alpha-1-antitrypsin deficiency; American A... |
| AAPC | antibiotic-associated pseudomembranous colitis |
| AAPMC | antibiotic-associated pseudomembranous colitis |
| tumour-associated antigen | Antigens that are highly correlated with certain tumour cells. They are not usually found, or are found to a lesser extent, on normal cells. (05 Mar 2000) |
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| Kaposi sarcoma associated herpesvirus protease | <enzyme> Genbank af010430 Registry number: EC 3.4.21.- Synonym: kshv protease, human herpesvirus 8 protease (26 Jun 1999) |
| lipoprotein-associated coagulation inhibitor | Formerly known as anticonvertin; a protein that inhibits the extrinsic pathway of coagulation by binding to the tissue factor III-factor VII-Calcium-factor Xa complex. (05 Mar 2000) |
| lymphadenopathy-associated virus | <virology> A type of retrovirus (human immunodeficiency virus) that is responsible for the fatal illness acquired immunodeficiency syndrome. Two strains have been identified. Type 1: the retrovirus recognised as the agent that induces AIDS. Type 2: a virus closely related to HIV-1 that also leads to immune suppression. HIV-2 is not as virulent as HIV-1 and is epidemic only in West Africa. Acronym: HIV (11 Nov 1997) |
| lymphocyte function associated antigen | A member of the integrin family that is expressed on all leukocytes and binds to ICAM-1 and ICAM-2 on a variety of cells. (05 Mar 2000) |
| lymphocyte function-associated antigen-1 | A heterodimer molecule widely expressed on cells of haematopoietic origin. Cd11a antigen comprises the alpha chain and the CD18 antigen (antigens, CD18) the beta chain. Lfa-1 is a major receptor of T-cells, B-cells, and granulocytes. It mediates the leukocyte adhesion reactions underlying cytolytic conjugate formation, helper T-cell interactions, and antibody-dependent killing by natural killer cells and granulocytes. Intracellular adhesion molecule-1 (icam-1) has been defined as a ligand for lfa-1. (12 Dec 1998) |
| lymphoma, mucosa-associated lymphoid tissue | Extranodal lymphoma of lymphoid tissue associated with mucosa that is in contact with exogenous antigens. Many of the sites of these lymphomas, such as the stomach, salivary gland, and thyroid, are normally devoid of lymphoid tissue. They acquire malt tissue as a result of an immunologically mediated disorder. (12 Dec 1998) |
| lysosome associated membrane glycoprotein | <protein> Lysosome specific integral membrane glycoproteins. Long luminal domain, short transmembrane domain, very short cytoplasmic tail. Function not yet clear. (18 Nov 1997) |