Annotation, genome
Annotation, genome: The process of identifying the locations and the coding regions of genes in a genome and determining what those genes do. An annotation (irrespective of the context) is a note added by way of explanation or commentary. Once a genome is sequenced, it needs to be annotated to make sense of it.
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- Annular pancreas
Annular pancreas: An abnormal ring of pancreas that encircles the duodenum and often causes intestinal obstruction. Nausea and vomiting are the usual symptoms and reflect the intestinal obstruction. Complete obstruction is usually evident in the newborn period. Partial obstruction may not present until later in childhood or adulthood. Diagnostic tests include upper GI series, abdominal […]
- Annulus
Annulus: A ringlike structure, or any body part that is shaped like a ring. Applied to many small ring-shaped structures. The base of a heart valve that supports the valve’s leaflets is called the annulus. A ring-shaped pancreas that encircles the duodenum is an annular pancreas. “Annulus” is a misspelling of the Latin “anulus” (a […]
- Anogenital tract
Anogenital tract: Angiogenital tract is a term used to refer to both the anus and genital tract. The genital tract encompasses the external and internal sex organs in both men and women. The term anogenital tract is often used in the categorization and/or description of disease processes that can affect both of these anatomic regions. […]
- Anomaly
Anomaly: Any deviation from normal, out of the ordinary. In medicine, an anomaly is usually something that is abnormal at birth.
- Anomaly, congenital
Anomaly, congenital: A birth defect. A minor congenital anomaly is an unusual anatomic feature such as a short second toe that is of no serious medical or cosmetic consequence. By contrast, a major congenital anomaly is a defect such as a cleft palate that is of serious medical or cosmetic consequence.