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Retraction of a clot resulting from contraction of PLATELET pseudopods attached to FIBRIN strands. The retraction is dependent on the contractile pro…

Repetitive nucleic acid sequences that are principal components of the archaeal and bacterial CRISPR-CAS SYSTEMS, which function as adaptive antivira…

Algorithms designed to find groups of similar data points (called clusters) in the dataset. Clustering is often used for feature engineering or patte…

The number of offspring produced at one birth by an oviparous or ovoviviparous animal.

The electric response of the cochlear hair cells to acoustic stimulation.

A set of three nucleotides in a protein coding sequence that specifies individual amino acids or a termination signal (CODON, TERMINATOR). Most codon…

The frequency of occurrence, in a specific organism's DNA sequence, of one of several potential synonymous codons that code for a particular amino ac…

A codon that directs initiation of protein translation (TRANSLATION, GENETIC) by stimulating the binding of initiator tRNA (RNA, TRANSFER, MET). In p…

An amino acid-specifying codon that has been converted to a stop codon (CODON, TERMINATOR) by mutation. Its occurance is abnormal causing premature t…

Any codon that signals the termination of genetic translation (TRANSLATION, GENETIC). PEPTIDE TERMINATION FACTORS bind to the stop codon and trigger …

A beverage made from ground COFFEA beans (SEEDS) infused in hot water. It generally contains CAFFEINE and THEOPHYLLINE unless it is decaffeinated.

Phenomenon that occurs when learning and memory abilities decrease naturally due to age.

The sexual union of a male and a female, a term used for human only.

A climate characterized by COLD TEMPERATURE for a majority of the time during the year.

An absence of warmth or heat or a temperature notably below an accustomed norm.

A sequence of responses that occur when an organism is exposed to excessive cold. In humans, a fall in skin temperature triggers gasping, hypertensio…

Maintenance of blood flow to an organ despite obstruction of a principal vessel. Blood flow is maintained through small vessels.

The sudden collapse and disappearance or diminution of a colony of organisms.

The visually perceived property of objects created by absorption or reflection of specific wavelengths of light.

The sequential activation of serum COMPLEMENT PROTEINS to create the COMPLEMENT MEMBRANE ATTACK COMPLEX. Factors initiating complement activation inc…

Complement activation initiated by the interaction of microbial ANTIGENS with COMPLEMENT C3B. When COMPLEMENT FACTOR B binds to the membrane-bound C3…

Complement activation initiated by the binding of COMPLEMENT C1 to ANTIGEN-ANTIBODY COMPLEXES at the COMPLEMENT C1Q subunit. This leads to the sequen…

Complement activation triggered by the interaction of microbial POLYSACCHARIDES with serum MANNOSE-BINDING LECTIN resulting in the activation of MANN…

Distensibility measure of a chamber such as the lungs (LUNG COMPLIANCE) or bladder. Compliance is expressed as a change in volume per unit change in …

The maximum compression a material can withstand without failure. (From McGraw-Hill Dictionary of Scientific and Technical Terms, 5th ed, p427)

Aromatic substances added to food before or after cooking to enhance its flavor. These are usually of vegetable origin.

A space which has limited openings for entry and exit combined with unfavorable natural ventilation such as CAVES, refrigerators, deep tunnels, pipel…

A parasexual process in BACTERIA; ALGAE; FUNGI; and ciliate EUKARYOTA for achieving exchange of chromosome material during fusion of two cells. In ba…

The magnitude of INBREEDING in humans.

A theoretical representative nucleotide or amino acid sequence in which each nucleotide or amino acid is the one which occurs most frequently at that…