| milkers' nodes | An infection of cows' udders by pseudocowpox virus, a member of the Poxviridae, that is transmitted to the fingers and hands of milkers, producing nodules and lymphangitis, and occasionally widespread papular or papulovesicular eruptions; human infection is transferable to uninfected cows. Synonym: milkers' nodes, paravaccinia, pseudocowpox. (05 Mar 2000) |
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| Haygarth's nodes | <anatomy> Exostoses from the margins of the articular surfaces and from the periosteum and bone in the neighborhood of the joints of the fingers, leading to ankylosis and associated with lateral deflection of the fingers toward the ulnar side, which occur in rheumatoid arthritis. Synonym: Haygarth's nodosities. (05 Mar 2000) |
| Heberden's nodes | Exostoses about the size of a pea or smaller, found on the terminal phalanges of the fingers in osteoarthritis, which are enlargements of the tubercles at the articular extremities of the distal phalanges. Synonym: Heberden's nodosities, Rosenbach's disease, tuberculum arthriticum. (05 Mar 2000) |
| singer's nodes | Small, circumscribed, bilateral, beadlike enlargements on the vocal cords caused by overuse or abuse of the voice; often reversible by voice therapy. Synonym: singer's nodes, singer's nodules, teachers' nodes. (05 Mar 2000) |
| supraclavicular nodes | <anatomy> The nodes located above the collar bone in the area of the neck. (09 Oct 1997) |
| diaphragmatic nodes | Three groups of small nodes, anterior, middle, and posterior, on the upper surface of the diaphragm; they receive afferents from the liver, diaphragm, and intercostal spaces and send efferents to parasternal and posterior mediastinal nodes. Synonym: nodi lymphatici phrenici superiores, diaphragmatic nodes. (05 Mar 2000) |
| ductus nodes | The highest nodes in a left pneumonectomy specimen that lie on the upper aspect of the left main branches and are accessed by dividing the ligamentum arteriosum. (05 Mar 2000) |
| Durck's nodes | Perivascular chronic inflammatory infiltrates in the brain, occurring in human trypanosomiasis. (05 Mar 2000) |
| teachers' nodes | Small, circumscribed, bilateral, beadlike enlargements on the vocal cords caused by overuse or abuse of the voice; often reversible by voice therapy. Synonym: singer's nodes, singer's nodules, teachers' nodes. (05 Mar 2000) |
| epitrochlear nodes | Two groups of nodes, superficial and deep, lying along the basilic vein above the medial epicondyle; they receive afferents from the ulnar side of the forearm and hand, and send efferents to the brachial nodes. Synonym: nodi lymphatici cubitales, epitrochlear nodes, lymph nodes of elbow. (05 Mar 2000) |
| left gastro-omental nodes | Nodes located in the greater omentum along the left gastroepiploic artery that drain part of the greater curvature of the stomach and greater omentum. Synonym: nodi lymphatici gastro-omentales sinistri, left gastro-omental nodes. (05 Mar 2000) |
| ABO blood group | <haematology> The major human blood type system which describes the oligosaccharide glycoprotein antigens found on the surface of human blood cells. According to the type of antigen present, a person may be assigned a blood type of A, B, AB or O. A second type of antigen, the Rh factor, renders a positive or negative blood type. The ABO blood group system is important because it determines who can donate blood to or accept blood from whom. Type A or AB blood will cause an immune reaction in people with type B blood and type B and AB blood will cause a reaction in people with type A blood. Conversely, type O blood has no A or B antigens, so people with type O blood are universal donors. And since AB blood already produces both antigens, people who are type AB can accept any of the other blood types without suffering an immune reaction. (04 Jul 1999) |
| actinobacteria group | A group of gram-positive, heterogeneous bacteria. This group encompasses a range of morphologically, physiologically, and chemically different organisms and includes bacteria that form cocci, short rods, irregular rods, and mycelia that fragment. (12 Dec 1998) |
| alkyl group | <chemistry> A funtional group on an organic molecule which is derived from an alkane which has lost a hydrogen atom. (13 Nov 1997) |
| aluminum group | Aluminum, boron, gallium, indium, and thallium. (05 Mar 2000) |