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A-B-C-D-E-F-G-H-I-J-K-L-M-N-O-P-Q-R-S-T-U-V-W-X-Y-Z
- V2 receptors
- class of vasopressin (ADH) receptor
- Vaccine
- Preparation of dead or weakened pathogens, or their products, which when introduced into the body, stimulates the production of protective T cells and/or antibodies without causing the disease.[Discussion] [flu vaccines]
- Vagus nerve
- Valence
- Number of electrons gained, lost, or shared by an atom in bonding to one or more other atoms. [Discussion]
- Valine
- [structure]
- Vascular
- Containing vessels that conduct liquid.
- Vasectomy
- Surgical removal of a portion of each vas deferens, thus preventing the addition of sperm to the semen.A common method of birth control for men. Sometimes the operation can be reversed, but don't count on it.
- Vasopressin
- arginine vasopressin, the antidiuretic hormone
- Vector
- (1) An animal (e.g., an insect) that transmits a parasite.Reducing the population of a vector is often a good way to lower the incidence of the disease it transmits. (2) In genetic engineering, a virus or plasmid that carries a molecule of recombinant DNA into a cell, thus transforming it. [retroviral vectors] [adeno-associated virus (AAV) as a vector]
- Ventral tegmental area (VTA)
- Vertebrate
- Any backboned animal. Includes fishes, amphibians, reptiles, birds, and mammals.
- Vestigial
- Term applied to a degenerate or incompletely developed structure which was more fully developed at an earlier stage of the organism and/or its ancestors.
- Vg1
- Gene whose protein product induces the formation of mesoderm in the frog embryo. [more]
- Viking
- [Missions to Mars]
- Virion
- A complete virus particle. It consists of a core containing genetic material (DNA or RNA) and often proteins, surrounded by a capsid of protein (and sometimes other materials as well).
- Viscera
- Organs in the body cavity.
- Vision
- in humans
- Vitamin
- Organic compound needed in small quantities by an organism in its metabolism which it cannot synthesize from the carbohydrates, fats, and proteins in its diet. [in human nutrition] [Recommended Dietary Allowances (RDAs)]
- Vitaxin
- Vitreous body
- in human eye
- Viviparous
- Having embryos that develop to adult form within the mother's body while securing most of their nourishment from the mother's tissues rather than from the yolk of the egg.