Từ điển y khoa
Thuật ngữ y khoa chuẩn hóa theo MeSH, ICD-11, SNOMED CT.
62,341 terms indexed
A basidiomycetous fungal genus of the family Agaricaceae, order Agaricales, which includes the field mushroom (A. campestris) and the commercial mushroom (A. bisporus).
A plant genus of the family LAMIACEAE that contains tilianin, agastanol, and agastaquinone (a cytotoxic diterpenoid quinone).
A class of polyamine and peptide toxins which are isolated from the venom of spiders such as Agelenopsis aperta.
A genus known for fibers obtained from their leaves: sisal from A. sisalana, henequen from A. fourcroyoides and A. cantala, or Manila-Maguey fiber from A. cantala. Some species provide a sap that is fermented to an intoxicating drink, called pulque in Mexico. Some contain agavesides.
Establishment of the age of an individual by examination of their skeletal structure.
A means of identifying the age of an animal or human through tooth examination.
The frequency of different ages or age groups in a given population. The distribution may refer to either how many or what proportion of the group. The population is usually patients with a specific disease but the concept is not restricted to humans and is not restricted to medicine.
Age as a constituent element or influence contributing to the production of a result. It may be applicable to the cause or the effect of a circumstance. It is used with human or animal concepts but should be differentiated from AGING, a physiological process, and TIME FACTORS which refers only to the passage of time.
Persons classified by age from birth (INFANT, NEWBORN) to octogenarians and older (AGED, 80 AND OVER).
The age, developmental stage, or period of life at which a disease or the initial symptoms or manifestations of a disease appear in an individual.
A person 65 years of age or older. For a person older than 79 years, AGED, 80 AND OVER is available.
Persons 80 years of age and older.
Biased behaviors or attitudes, differential treatment, unequal access to social participation or opportunities based on age.
A genus of large, brightly colored SPONGES in the family Agelasidae, possessing a skeleton of spongin fibers with a core of large spicules (megascleres).
Birth defect that results in a partial or complete absence of the CORPUS CALLOSUM. It may be isolated or a part of a syndrome (e.g., AICARDI'S SYNDROME; ACROCALLOSAL SYNDROME; ANDERMANN SYNDROME; and HOLOPROSENCEPHALY). Clinical manifestations include neuromotor skill impairment and INTELLECTUAL DISABILITY of variable severity.
A plant genus of the family ASTERACEAE. The common name of snakeroot is also used for POLYGALA; SANICULA; ARISTOLOCHIA and others.
A plant genus of the family ASTERACEAE that contains PYRROLIZIDINE ALKALOIDS. Yellow vein disease of Ageratum is caused by a viral DNA complex of a begomovirus (GEMINIVIRIDAE).
Complete or severe loss of the subjective sense of taste, frequently accompanied by OLFACTION DISORDERS.
The clumping together of suspended material resulting from the action of AGGLUTININS.
Tests that are dependent on the clumping of cells, microorganisms, or particles when mixed with specific antiserum. (From Stedman, 26th ed)
A substance that makes particles (such as bacteria or cells) stick together to form a clump or a mass.
Large HYALURONAN-containing proteoglycans found in articular cartilage (CARTILAGE, ARTICULAR). They form into aggregates that provide tissues with the capacity to resist high compressive and tensile forces.
A genus of PASTEURELLACEAE. Members are nonmotile, Gram-negative, facultatively anaerobic rods or coccobacilli. Its members are X factor (HEMIN) independent and variably dependent on V factor (NAD).
A species of Gram-negative, facultatively anaerobic spherical or rod-shaped bacteria indigenous to dental surfaces. It is associated with PERIODONTITIS; BACTERIAL ENDOCARDITIS; and ACTINOMYCOSIS.
A species of Gram-negative, facultatively anaerobic spherical or rod-shaped bacteria indigenous to oral cavity and pharynx. It is associated with BACTERIAL ENDOCARDITIS; and MENINGITIS.
A species of Gram-negative, facultatively anaerobic pleomorphic rod-shaped often filamentous bacteria in the genus of AGGREGATIBACTER found in the oral cavity. It is associated with DENTAL PLAQUE; and BACTERIAL ENDOCARDITIS.
Behavior which may be manifested by destructive and attacking action which is verbal or physical, by covert attitudes of hostility or by obstructionism.
Inflammation and loss of PERIODONTIUM that is characterized by rapid attachment loss and bone destruction in the presence of little local factors such as DENTAL PLAQUE and DENTAL CALCULUS. This highly destructive form of periodontitis often occurs in young people and was called early-onset periodontitis, but this disease also appears in old people.
The gradual irreversible changes in structure and function of an organism that occur as a result of the passage of time.
Changes in the organism associated with senescence, occurring at an accelerated rate.
A genus of venomous snakes of the subfamily Crotalinae. Twelve species of this genus are found in North and Central America and Asia. Agkistrodon contortrix is the copperhead, A. piscivorus, the cottonmouth. The former is named for its russet or orange-brown color, the latter for the white interior of its mouth. (Goin, Goin, and Zug, Introduction to Herpetology, 3d ed, p336; Moore, Poisonous Snakes of the World, 1980, p75)