| POU domain | <molecular biology> A conserved protein domain of around 150 amino acids, composed of a 20 amino acid homeobox domain and a larger POU specific domain and so is the target of some transcription factors. Named POU (Pit Oct Unc) after 3 such proteins: Pit 1 regulates expression of certain pituitary genes, Oct 1 and 2, that bind an octamer sequence in the promoters of histone H2A and some immunoglobulin genes and Unc 86, involved in nematode sensory neuron development. (31 Dec 1997) |
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| pouch | 1. A small bag; usually, a leathern bag; as, a pouch for money; a shot pouch; a mail pouch, etc. 2. That which is shaped like, or used as, a pouch; as: A protuberant belly; a paunch; so called in ridicule. <medicine> A cyst or sac containing fluid. <botany> A silicle, or short pod, as of the shepherd's purse. A bulkhead in the hold of a vessel, to prevent grain, etc, from shifting. Pouch mouth, a mouth with blubbered or swollen lips. Origin: F. Poche a pocket, pouch, bag; probably of Teutonic origin. See Poke a bag, and cf. Poach to cook eggs, to plunder. Source: Websters Dictionary (01 Mar 1998) |
| pouch of Douglas | <anatomy> A pocket formed by the deflection of the peritoneum from the rectum to the uterus. Synonym: excavatio rectouterina, cavum douglasi, cul-de-sac, Douglas' cul-de-sac, Douglas' pouch, pouch of Douglas, rectovaginouterine pouch. (05 Mar 2000) |
| pouch, pavlov | at different points along the dogs' digestive tracts, the russian physiologist ivan petrovich pavlov (1848-1936) surgically created pockets ( pavlov pouches ) from which he could obtain secretions, the aim being to study the physiology of the digestive tract. He did so from the salivary glands down to the stomach, liver and pancreas with considerable success and in 1904 (the 4th year it was awarded) he received the nobel prise for his work on the physiology of digestion, through which knowledge on vital aspects of the subject has been transformed and enlarged. (12 Dec 1998) |
| pouch-shell | <zoology> A small British and American pond snail (Bulinus hypnorum). Source: Websters Dictionary (01 Mar 1998) |
| pouched | <zoology> Having a marsupial pouch; as, the pouched badger, or the wombat. Having external cheek pouches; as, the pouched gopher. Having internal cheek pouches; as, the pouched squirrels. Pouched dog. See Pocket mouse, under Pocket. Source: Websters Dictionary (01 Mar 1998) |
| pouchitis | Acute inflammation of intestinal mucosa seen in an ileal reservoir that may extend transmurally, occurring as a late complication of restorative proctocolectomy (proctocolectomy, restorative), possibly due to obstruction and stercoral ulceration. (12 Dec 1998) |
| poudrage | 1. Powdering. Synonym: talc operation. Origin: F. Pleural poudrage, covering the opposing pleural surfaces with a slightly irritating powder in order to secure adhesion. (05 Mar 2000) |
| poulpe | <zoology> Same as Octopus. <zoology> Musk poulp, a Mediterranean octopod (Eledone moschata) which emits a strong odour of musk. Origin: F. Poulpe, fr. L. Polypus. See Polyp. Source: Websters Dictionary (01 Mar 1998) |
| poultice | A soft composition, as of bread, bran, or a mucilaginous substance, to be applied to sores, inflamed parts of the body, etc.; a cataplasm. "Poultice relaxeth the pores." Origin: L. Puls, pl. Pultes, a thick pap; akin to Gr. Poltos. Cf. Pulse seeds. Source: Websters Dictionary (01 Mar 1998) |
| poultry diseases | Diseases of birds which are raised as a source of meat or eggs for human consumption and are usually found in barnyards, hatcheries, etc. The concept is differentiated from bird diseases which is for diseases of birds not considered poultry and usually found in zoos, parks, and the wild. (12 Dec 1998) |
| poultry handler's disease | Extrinsic allergic alveolitis similar to bird-breeder's lung, caused by inhalation of particulate emanations from domesticated fowl such as chickens and turkeys. (05 Mar 2000) |
| poultry products | Food products manufactured from poultry. (12 Dec 1998) |
| poultryman's itch | Eruption due to infestation with the mite, Dermanyssus gallinae. (05 Mar 2000) |
| pounce | 1. A fine powder, as of sandarac, or cuttlefish bone, formerly used to prevent ink from spreading on manuscript. 2. Charcoal dust, or some other coloured powder for making patterns through perforated designs, used by embroiderers, lace makers, etc. Pounce box, a box for sprinkling pounce. Pounce paper, a transparent paper for tracing. Origin: F. Ponce pumice, pounce, fr. L. Pumex, -icis, pumice. See Pumice. Source: Websters Dictionary (01 Mar 1998) |