Unit of acceleration based on the acceleration produced by the earth's gravitational attraction, where 1 g = 980.621 cm/sec2 (about 32.1725 ft/sec2) at sea level and 45° latitude. At 30° latitude, g equals 979.329 cm/sec2.
G (guanine): G stands for guanine, one member of the
base pair G-C (guanine-cytosine) in DNA. The other base pair in DNA
is A-T (adenine-thymine).
an antigenic glycoprotein frequently associated with viral surfaces.
enteroendocrine cells that secrete gastrin, found primarily in the mucosa of the pyloric antrum of the stomach.
the single common variance or factor that is common to (empirically intercorrelates with) different intelligence tests (general);
a substance required for the growth of a specific organism.
inertial force produced by accelerations or gravity, expressed in gravitational units; one G is equal to the pull of gravity at the earth's surface at sea level and 45° north latitude (32.1725 ft/sec2; 980.621 cm/sec2).
See Also: g
G protein diseases
a widely variant group of diseases resultant from mutations in G proteins; these include endocrine adenomas, cholera, and nightblindness.
G proteins: These molecules have
been described as �biological traffic lights.� Located
inside the cell, G proteins are able respond to signals
outside the cell�light, smell, hormones�and translate
(transduce) these signals into action within the cell.
Alfred G. Gilman and Martin Rodbell shared the 1994 Nobel
Prize in Physiology or Medicine for �their discovery of G-
proteins and the role of these proteins in signal
transduction in cells.�
a syndrome of characteristic facies associated with hypospadias, ventral curvature of the penis, and dysphagia. Apparently the same as the BBB syndrome of Opritz et al. Autosomal dominant inheritance.
a method of measuring venous pressure, based on the Gärtner vein phenomenon; with the patient sitting erect, a vein is selected on the back of the hand that is held dependent, well below the level of the right atrium, and then is raised slowly; when the vein is observed to collapse, the distance between its level and that of the atrium is measured with a millimeter rule; this distance gives the venous pressure in millimeters of blood; thus the vein itself is used as a manometer communicating with the right atrium; highly inaccurate, especially in elderly subjects.
an apparatus for estimating the blood pressure by noting the force, expressed by the height of a column of mercury, needed to arrest pulsation in a finger encircled by a compressing ring.
Gärtner vein phenomenon
fullness of the veins of the arm and hand held below heart level and collapse at a certain variable distance above that level. An unreliable test for venous pressure.
a cobbler's suture used in closing intestinal wounds.
a capillary fragility test to determine the presence or absence of scurvy.
the formation of iodoform from acetone by iodine and ammonia in alcohol.
a portion of the superficial layer of the obturator membrane.
phloroglucin and vanillin used as a reagent in Günzberg test.
a test for hydrochloric acid using phloroglucin vanillin (Günzberg reagent), with which a bright red color is produced in the presence of the acid.
the globular (G) subunit of the actin molecule, having a molecular weight 42 kD; it is soluble in dilute salt, polymerizing to F-actin when the ionic strength is increased.
a chromosome-staining technique used in human cytogenetics to identify individual chromosomes, which produces characteristic bands; it utilizes acetic acid fixation, air drying, denaturing chromosomes mildly with proteolytic enzymes, salts, heat, detergents, or urea, and finally Giemsa stain; chromosome bands appear similar to those fluorochromed by Q-banding stain.
Alternate names: Giemsa chromosome banding stain
Abbreviation for granulocyte colony-stimulating factor.
The tolerance of a person or a piece of equipment to forces that develop as a result of acceleration or deceleration.
Symbol for gap0 period.
Symbol for gap1 period.
Symbol for gap2 period.
Symbol for gallium, preceded by superscript, it indicates an isotope.
Abbreviation for γ-aminobutyric acid.
Pertaining to the action of gamma aminobutyric acid (GABA) or to neural or metabolic pathways in which it functions as a transmitter.
Alternate names: GABA-ergic, gabaergic
a form of tropical ulcer affecting the residents of this region; it resembles a syphilitic ulcer, especially in the appearance of its scar.
Abbreviation for glutamate decarboxylase; generalized anxiety disorder.