The fundamental, structural, and functional units or subunits of living organisms. They are composed of CYTOPLASM containing various ORGANELLES and a CELL MEMBRANE boundary.
Cell
D004194
Disease
A definite pathologic process with a characteristic set of signs and symptoms. It may affect the whole body or any of its parts, and its etiology, pathology, and prognosis may be known or unknown.
Diseases
D005075
Biological Evolution
The process of cumulative change over successive generations through which organisms acquire their distinguishing morphological and physiological characteristics.
Evolution, Biological
D005260
Female
Females
D006801
Humans
Members of the species Homo sapiens.
Homo sapiens,Man (Taxonomy),Human,Man, Modern,Modern Man
D000368
Aged
A person 65 years of age or older. For a person older than 79 years, AGED, 80 AND OVER is available.
Elderly
D000375
Aging
The gradual irreversible changes in structure and function of an organism that occur as a result of the passage of time.