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Post-translational modification of proteins with ADENOSINE DIPHOSPHATE RIBOSE.

A stage of development at which the ADRENAL GLANDS undergo maturation leading to the capability of producing increasing amounts of adrenal androgens,…

The adhesion of gases, liquids, or dissolved solids onto a surface. It includes adsorptive phenomena of bacteria and viruses onto surfaces as well. A…

Pregnancy in women at least 35 years old at the time of delivery. This was formerly known as geriatric pregnancy.

Life or metabolic reactions occurring in an environment containing oxygen.

Continuation of visual impression after cessation of stimuli causing the original image.

The clumping together of suspended material resulting from the action of AGGLUTININS.

The gradual irreversible changes in structure and function of an organism that occur as a result of the passage of time.

The mixture of gases present in the earth's atmosphere consisting of oxygen, nitrogen, carbon dioxide, and small amounts of other gases.

The dissociation of molecules in the air into positive and negative ions under the influence of an electric field.

The motion of air currents.

Physiologically, the opposition to flow of air caused by the forces of friction. As a part of pulmonary function testing, it is the ratio of driving …

Drinkable liquids containing ETHANOL.

A procedure consisting of a sequence of algebraic formulas and/or logical steps to calculate or determine a given task.

The covalent bonding of an alkyl group to an organic compound. It can occur by a simple addition reaction or by substitution of another functional gr…

Variant forms of the same gene, occupying the same locus on homologous CHROMOSOMES, and governing the variants in production of the same gene product.

A situation where one member (allele) of a gene pair is lost (LOSS OF HETEROZYGOSITY) or amplified.

The process by which organisms release chemical compounds known as ALLELOCHEMICALS which influence the physiology, growth, survival, colonization, an…

Biological adaptation, such as the rise of EPINEPHRINE in response to exercise, stress or perceived danger, followed by a fall of epinephrine during …

The modification of the reactivity of ENZYMES by the binding of effectors to sites (ALLOSTERIC SITES) on the enzymes other than the substrate BINDING…

A site on an enzyme which upon binding of a modulator, causes the enzyme to undergo a conformational change that may alter its catalytic or binding p…

Positively charged particles composed of two protons and two NEUTRONS, i.e. equivalent to HELIUM nuclei, which are emitted during disintegration of h…

Brain waves characterized by a relatively high voltage or amplitude and a frequency of 8-13 Hz. They constitute the majority of waves recorded by EEG…

A process whereby multiple RNA transcripts are generated from a single gene. Alternative splicing involves the splicing together of other possible se…

A vertical distance measured from a known level on the surface of a planet or other celestial body.

The Alu sequence family (named for the restriction endonuclease cleavage enzyme Alu I) is the most highly repeated interspersed repeat element in hum…

The elaboration of dental enamel by ameloblasts, beginning with its participation in the formation of the dentino-enamel junction to the production o…

The creation of an amine. It can be produced by the addition of an amino group to an organic compound or reduction of a nitro group.

Three-dimensional protein structural elements that are composed of a combination of secondary structures. They include HELIX-LOOP-HELIX MOTIFS and ZI…

The order of amino acids as they occur in a polypeptide chain. This is referred to as the primary structure of proteins. It is of fundamental importa…