| MCU | malaria control unit; maximum care unit; micturating cystourethrography; motor cortex unit |
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| PVC | peripheral venous catheterization; persistent vaginal cornification; polyvinyl chloride; postvoiding... |
| SSC | single-strand conformational [analysis]; sister strand crossover; somatosensory cortex; standard sal... |
| VC | color vision; variance cardiography; vascular changes; vasoconstriction; vena cava; venereal case; v... |
| AICA | Anterior Inferior Cerebellar Artery; Hemifacial Spasm |
| european molecular biology lab gene bank | <molecular biology> A large database of DNA sequence data in Heidelberg, Germany, compiled from international sources. It is the European equivalent to the Genbank DNA sequence databank in the United States of America. WWW: EMbase. (09 Oct 1997) |
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| evolution, molecular | Evolution at the molecular level of DNA sequences and proteins. (rieger et al., glossary of genetics: classical and molecular, 5th ed) (12 Dec 1998) |
| kinetic molecular theory | <chemistry> This theory assumes that molecules must collide in order to react. The more collisions the more likely it is for a reaction to occur. However, depending on the conditions, only a small fraction of the collisions are effective in producing a reaction. There are several constraints. In order for a reaction to occur, bonds initially are broken, which requires energy. This energy depends on the type of the reaction and comes from the kinetic energies that the molecules possess before the collision. It is called the activation energy. Increasing the temperature increases the kinetic energies and more collisions will occur. In adition, at a higher temperature a greater number of the reacting molecules might possess an energy equal to or greater than the activation energy. However the molecules must also collide in a specific orientation, called the steric factor in order for a reaction to occur. A reaction will only be successful, if the collision has enough energy to be either equal to or greater than the activation energy and if the orientation of the collision allows for correct bond formation. These factors are in the Arrhenius equation: k = zp The rate constant k is proportional to the Arrhenius factor A. A is the product of the collision frequency z, and the steric factor p. The fraction of collisions with sufficient energy to produce a reaction are in the term of the equation. (09 Jan 1998) |
| kininogen, high-molecular-weight | A plasma protein, molecular weight of 110 kD, that normally exists in plasma in a 1:1 complex with prekallikrein. Hmwk is split by plasma kallikrein to produce bradykinin. The complex is a cofactor in the activation of coagulation factor xii. The product of this reaction, xiia, in turn activates prekallikrein to kallikrein. (12 Dec 1998) |
| kininogen, low-molecular-weight | A protein, molecular weight 50 kD, located in various normal tissues. Upon cleavage by kallikrein or other kallikreins, it forms kallidin. Kallidin, in turn, is converted into bradykinin. (12 Dec 1998) |
| anterior cerebellar notch | A wide, shallow notch on the anterior surface of the cerebellum occupied laterally by the superior cerebellar peduncles and the inferior quadrigeminal bodies medially. Synonym: anterior notch of cerebellum, incisura cerebelli anterior, semilunar notch. (05 Mar 2000) |
| anterior inferior cerebellar artery | <anatomy, artery> Origin, basilar; distribution, lower surface of lateral lobes of cerebellum, choroid plexus in cerebellopontine angle; anastomoses, posterior inferior cerebellar; usual source of labyrinthine artery. Synonym: arteria cerebelli inferior anterior. (05 Mar 2000) |
| cerebellar | <anatomy> Pertaining to the cerebellum. (18 Nov 1997) |
| cerebellar arteries | An artery related to and supplying the cerebellum. See: anterior inferior cerebellar artery, posterior inferior cerebellar artery, superior cerebellar artery. (05 Mar 2000) |
| cerebellar astrocytoma | <oncology, tumour> This primary brain tumour of the cerebellum accounts for 10 to 30% of brain tumours in children. The are usually slow growing and benign. Symptoms include gait problems, clumsiness, headache and vomiting. Treatment often involves a combination of surgery, radiation therapy and chemotherapy. (27 Sep 1997) |
| cerebellar ataxia | Loss of muscle coordination caused by disorders of the cerebellum. (05 Mar 2000) |
| cerebellar atrophy | A degeneration of the cerebellum, particularly the Purkinje cells, as the result of abiotrophy or of toxic agents, as in alcoholism. (05 Mar 2000) |
| cerebellar cyst | A cyst usually occurring in the lateral cerebellar white matter; often a part of cerebellar astrocytoma. (05 Mar 2000) |
| cerebellar dyssynergia | <neurology> A condition marked by generalised intention tremors associated with disturbance of muscle tone and of muscular coordination, caused by a disorder of cerebellar function. (12 Dec 1998) |
| cerebellar fissures | The deep furrows which divide the lobules of the cerebellum. See: postcentral fissure, primary fissure of cerebellum, secondary fissure of cerebellum. Synonym: fissurae cerebelli. (05 Mar 2000) |