| sentinel tag | Projecting edematous skin at the lower end of an anal fissure. (05 Mar 2000) |
|---|
| sentinel | 1. One who watches or guards; specifically, a soldier set to guard an army, camp, or other place, from surprise, to observe the approach of danger, and give notice of it; a sentry. "The sentinels who paced the ramparts." (Macaulay) 2. Watch; guard. "That princes do keep due sentinel." 3. <zoology> A marine crab (Podophthalmus vigil) native of the Indian Ocean, remarkable for the great length of its eyestalks. Synonym: sentinel crab. Origin: F. Sentinelle (cf. It. Sentinella); probably originally, a litle path, the sentinel's beat, and a dim. Of a word meaning, path; cf. F. Sente path. L. Semita; and OF. Sentine, sentele, senteret, diminutive words. Cf. Sentry. Source: Websters Dictionary (01 Mar 1998) |
|---|---|
| sentinel animal | An animal deliberately placed in a particular environment to detect the presence of an infectious agent, such as a virus. (05 Mar 2000) |
| sentinel gland | A single enlarged lymph node in the omentum that may be an indication of an ulcer opposite to it in the greater or lesser curvature of the stomach. (05 Mar 2000) |
| sentinel loop sign | In gastrointestinal radiology, dilatation of a segment of large or small intestine, indicative of localised ileus from nearby inflammation. (05 Mar 2000) |
| sentinel pile | A circumscribed thickening of the mucous membrane at the lower end of a fissure of the anus. (05 Mar 2000) |
| sentinel spinous process fracture | Fracture of the spinous process with undetected deeper fracture's of the vertebral arch. (05 Mar 2000) |
| sentinel surveillance | Monitoring of rate of occurrence of specific conditions to assess the stability or change in health levels of a population. It is also the study of disease rates in a specific cohort, geographic area, population subgroup, etc. To estimate trends in larger population. (12 Dec 1998) |
| affinity tag | <biochemistry, molecular biology> A short amino acid sequence, usually engineered onto the N- or C-terminus of a protein, to make its purification easier. (14 Nov 1997) |
| preauricular tag | Common minor anomaly, a rudimentary tag of ear tissue, often containing a core cartilage, usually located just in front of the ear (auricle). Therefore also called preauricular tag. (12 Dec 1998) |
| skin tag | A polypoid outgrowth of both epidermis and dermal fibrovascular tissue, common terminology for any small benign cutaneous lesion. Synonym: acrochordon, fibroepithelial polyp, fibroma molle, senile fibroma, soft wart. (05 Mar 2000) |
| tag | See: label, tracer. 2. A small outgrowth or polyp. Anal skin tag, a fibrous polyp of the anus. (05 Mar 2000) |
| tag, ear | Common minor anomaly, a rudimentary tag of ear tissue, often containing a core cartilage, usually located just in front of the ear (auricle). Therefore, also called preauricular tag. The presence of 2 or more minor anomalies in a child increases the probability that the child has a major malformation. (12 Dec 1998) |
| tag, preauricular | See Tag, ear. (12 Dec 1998) |
| ear tag | Common minor anomaly, a rudimentary tag of ear tissue, often containing a core cartilage, usually located just in front of the ear (auricle). Therefore also called preauricular tag. The presence of 2 or more minor anomalies in a child increases the probability that the child has a major malformation. (12 Dec 1998) |
| Expressed Sequence Tag | <molecular biology> Expressed sequence tags are sequence tagged sites derived from cDNAs. See: sequence tagged site. Acronym: EST (06 Aug 1998) |