| Purkinje's fibres | <cardiology, pathology> A group of specialised cardiac muscle cells that conduct electrical impulses through the heart and are involved in regulating the heart beat. The fibres form the terminal portion of the heart conduction system and have central granulated protoplasm containing one or two nuclei and a transversely striated peripheral portion. They are the terminal ramifications of the conducting system of the heart found beneath the endocardium of the ventricles. See: conducting system of heart. (10 Jul 2002) |
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| Purkinje's figures | <ophthalmology> Shadows of the retinal vessels, seen as dark lines on a reddish field when a light enters the eye through the sclera and not the pupil. (05 Mar 2000) |
| Purkinje's layer | The layer of Purkinje cells between the molecular and granular layers of the cerebellar cortex. Synonym: stratum neuronorum piriformium, ganglionic layer of cerebellar cortex, layer of piriform neurons, Purkinje's layer, stratum gangliosum cerebelli. (05 Mar 2000) |
| Purkinje's network | <cardiology, physiology> The network formed by Purkinje's fibres beneath the endocardium. (05 Mar 2000) |
| Purkinje's phenomenon | <ophthalmology> In the light-adapted eye, the region of maximal brightness is in the yellow; in the dark-adapted eye, the region of maximal brightness is in the green. Synonym: Purkinje effect, Purkinje shift. (05 Mar 2000) |
| Purkinje, Johannes von | <person> Bohemian anatomist and physiologist, 1787-1869. See: Purkinje conduction, Purkinje images, Purkinje shift, Purkinje system, Purkinje cell, Purkinje's corpuscle, Purkinje's fibres, Purkinje's figures, Purkinje's layer, Purkinje's network, Purkinje's phenomenon, Purkinje-Sanson images. (05 Mar 2000) |
| Purkinje-Sanson images | <ophthalmology, physiology> The two images formed by the anterior and posterior surfaces of the cornea and the two images formed by the anterior and posterior surfaces of the lens. Synonym: catatropic image, Purkinje images, Sanson's images. (05 Mar 2000) |
| purl | 1. To run swiftly round, as a small stream flowing among stones or other obstructions; to eddy; also, to make a murmuring sound, as water does in running over or through obstructions. "Swift o'er the rolling pebbles, down the hills, Louder and louder purl the falling rills." (Pope) 2. [Perh. Fr. F. Perler to pearl, to bead. See Pearl] To rise in circles, ripples, or undulations; to curl; to mantle. "thin winding breath which purled up to the sky." (Shak) Origin: Cf. Sw. Porla, and E. Pur to murmur as a cat. 1. A circle made by the notion of a fluid; an eddy; a ripple. "Whose stream an easy breath doth seem to blow, Which on the sparkling gravel runs in purles, As though the waves had been of silver curls." (Drayton) 2. A gentle murmur, as that produced by the running of a liquid among obstructions; as, the purl of a brook. 3. [Perh. From F.perler, v. See Purl to mantle] Malt liquor, medicated or spiced; formerly, ale or beer in which wormwood or other bitter herbs had been infused, and which was regarded as tonic; at present, hot beer mixed with gin, sugar, and spices. "Drank a glass of purl to recover appetite." . "Drinking hot purl, and smoking pipes." . 4. <zoology> A tern. See: Purl. Source: Websters Dictionary (01 Mar 1998) |
| purlieu | 1. Originally, the ground near a royal forest, which, having been unlawfully added to the forest, was afterwards severed from it, and disafforested so as to remit to the former owners their rights. "Then as a tiger, who by chance hath spied In some purlieu two gentle fawns at play." (Milton) 2. Hence, the outer portion of any place; an adjacent district; environs; neighborhood. "The purlieus of St. James." "brokers had been incessantly plying for custom in the purlieus of the court." (Macaulay) Origin: Corrupted (by influence of lieu place) fr. OF. Puralee, poralee (equiv. To LL. Perambulatio a survey of boundaries, originally, a going through); por (L. Pro, confused, however, with L. Per through) + alee. See Pro-, and Alley Alternative forms: pourlieu. Source: Websters Dictionary (01 Mar 1998) |
| Purmann's method | Treatment of aneurysm by extirpation of the sac. (05 Mar 2000) |
| Purmann, Matthaeus | <person> German surgeon, 1648-1721. See: Purmann's method. (05 Mar 2000) |
| purocoll | <chemistry> A yellow crystalline substance allied to pyrrol, obtained by the distillation of gelatin. Origin: Puro- + Gr. Glue. Source: Websters Dictionary (01 Mar 1998) |
| puromucous | Synonym: mucopurulent. Origin: L. Pus (pur-), pus, + mucus, mucus (05 Mar 2000) |
| puromycin | <drug> An antibiotic that acts as an aminoacyl tRNA analogue. Binds to the A site on the ribosome, forms a peptide linkage with the growing chain and then causes premature termination. (18 Nov 1997) |
| puromycin aminonucleoside | <chemical> Puromycin derivative that lacks the methoxyphenylalanyl group on the amine of the sugar ring. It is an antibiotic with antineoplastic properties and can cause nephrosis. Pharmacological action: antibiotics, antineoplastic, antimetabolites, antineoplastic. Chemical name: Adenosine, 3'-amino-3'-deoxy-N,N-dimethyl- (12 Dec 1998) |
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| purple |
In the history of cryptography, 97-shiki-obun In-ji-ki (九七式欧文印字機) ("System 97 Printing Machine for European Characters") or Angooki Taipu B (暗号機B型) ("Type B Cipher Machine"), codenamed PURPLE by the United States, was a diplomatic cryptographic machine used by the Japanese Foreign Office during, and just before, World War II. Purple was an electromechanical (stepping switch) cipher. ...
Ãâó: en.wikipedia.org/wiki/PURPLE
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| pure culture |
one containing only one kind of microorganism, without any contaminants.
Ãâó: www.merckmedicus.com/pp/us/hcp/thcp_dorlands_conte...
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| puromycin |
An antibiotic compound that inhibits protein synthesis and that binds to the ribosome as an analogue of aminoacyl-tRNA.
Ãâó: www.nature.com/nrm/journal/v6/n5/glossary/nrm1647_...
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| puromycin |
A nucleoside antibiotic that interrupts protein synthesis by incorporating into the polypeptide and causing premature release from the ribosome.
Ãâó: www.genpromag.com/Glossary~LETTER~P.html
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| purified protein derivative |
Material used in the tuberculin skin test (see Tuberculin Skin Test); the most common test for exposure to Mycobacterium tuberculosis, the bacterium that causes TB. PPD is sometimes used synonymously with TST. In the PPD test, a small amount of TB protein is injected under the skin. If patients have been previously infected, they will mount a delayed-type hypersensitivity reaction, characterized by a hard red bump called an induration.
Ãâó: www.amfar.org/cgi-bin/iowa/bridge.html
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| PUR | purging the body by the use of a cathartic to stimulate evacuation of the bowels |
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| PUR | a purging medicine |
| PUR | strongly laxative |
| PUR | of or resembling purgatory |
| PUR | serving to purge or rid of sin |
| PUR | (theology) a place where Roman Catholics think those who have died in a state of grace undergo limited torment to expiate their sins |
| PUR | a temporary condition of torment or suffering |
| PUR | an act of removing by cleansing |
| PUR | the act of clearing yourself (or another) from some stigma or charge |
| PUR | excrete or evacuate (someone's bowels or body) |
| PUR | eject the contents of the stomach through the mouth |
| PUR | rinse, clean, or empty with a liquid |
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