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A sequence of amino acids in a polypeptide or of nucleotides in DNA or RNA that is similar across multiple species. A known set of conserved sequence…

Arrest of cell locomotion or cell division when two cells come into contact.

A negative shift of the cortical electrical potentials that increases over time. It is associated with an anticipated response to an expected stimulu…

The ability to detect sharp boundaries (stimuli) and to detect slight changes in luminance at regions without distinct contours. Psychophysical measu…

Transmission of energy or mass by a medium involving movement of the medium itself. The circulatory movement that occurs in a fluid at a nonuniform t…

The turning inward of the lines of sight toward each other.

Tapering-off physical activity from vigorous to light, to gradually return the body to pre-exercise condition and metabolic state.

The process whereby large extents of CORAL rapidly pale through loss of their algal endosymbionts via destabilization of the coral–algal SYMBIOSIS. (…

Marine ridges composed of living CORALS, coral skeletons, calcareous algae, and other organisms, mixed with minerals and organic matter. They are fou…

A POSTURE in which an ideal body mass distribution is achieved for the ABDOMINAL CORE. Abdominal core stability and balance provides the body an abil…

The apparent deflection (Coriolis acceleration) of a body in motion with respect to the earth, as seen by an observer on the earth, attributed to a f…

Oil from ZEA MAYS or corn plant.

The circulation of blood through the CORONARY VESSELS of the HEART.

Process of maintaining the functions of CORPORA LUTEA, specifically PROGESTERONE production which is regulated primarily by pituitary LUTEINIZING HOR…

The gradual destruction of a metal or alloy due to oxidation or action of a chemical agent. (From McGraw-Hill Dictionary of Scientific and Technical …

Measurable changes in activities in the CEREBRAL CORTEX upon a stimulation. A change in cortical excitability as measured by various techniques (e.g.…

The decrease in neuronal activity (related to a decrease in metabolic demand) extending from the site of cortical stimulation. It is believed to be r…

A physiological response to awakening. It is a discreet and distinct component of the CORTISOL circadian cycle, with characteristics unrelated to cor…

High-energy radiation or particles from extraterrestrial space that strike the earth, its atmosphere, or spacecraft and may create secondary radiatio…

Plasmids containing at least one cos (cohesive-end site) of PHAGE LAMBDA. They are used as cloning vehicles.

Oil obtained from the seeds of Gossypium herbaceum L., the cotton plant. It is used in dietary products such as oleomargarine and many cooking oils. …

Areas of increased density of the dinucleotide sequence cytosine--phosphate diester--guanine. They form stretches of DNA several hundred to several t…

A water-saving mode of photosynthesis whereby CARBON DIOXIDE (CO2) taken up during the nocturnal opening of stomata (STOMATA, PLANT) is fixed to prod…

Adaptive antiviral defense mechanisms, in archaea and bacteria, based on DNA repeat arrays called CLUSTERED REGULARLY INTERSPACED SHORT PALINDROMIC R…

Cultivated plants or agricultural produce such as grain, vegetables, or fruit. (From American Heritage Dictionary, 1982)

Protection conferred on a host by inoculation with one strain or component of a microorganism that prevents infection when later challenged with a si…

Serological reactions in which an antiserum against one antigen reacts with a non-identical but closely related antigen.

Class I-restricted activation of CD8-POSITIVE LYMPHOCYTES resulting from ANTIGEN PRESENTATION of exogenous ANTIGENS (cross-presentation). This is in …

The reciprocal exchange of segments at corresponding positions along pairs of homologous CHROMOSOMES by symmetrical breakage and crosswise rejoining …

In utero measurement corresponding to the sitting height (crown to rump) of the fetus. Length is considered a more accurate criterion of the age of t…