| tylose | <plant biology> A parenchyma cell outgrowth that wholly or partly blocks a xylem vessel. It grows out from an axial or ray parenchyma cell through a pit in the vessel wall. (13 Nov 1997) |
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| tylosin | <chemical> Macrolide antibiotic obtained from cultures of streptomyces fradiae. The drug is effective against many microorganisms in animals but not in humans. Pharmacological action: antibiotics, macrolide. Chemical name: Tylosin (12 Dec 1998) |
| tylosin reductase | <enzyme> From streptomyces fradiae; catalyses the reduction of tylosin to relomycin in the presence of NADPH; mw 270 kD; inhibited by fad or fmn; shows a broad substrate specificity toward all macrolide aldehydes; may have physiological role of macrolide detoxification for the bacterium; structure of tylosin and relomycin given in first source Registry number: EC 1.1.1.- (26 Jun 1999) |
| tylosis | Origin: NL, fr. Gr. A lump, knot. <botany> An intrusion of one vegetable cell into the cavity of another, sometimes forming there an irregular mass of cells. Source: Websters Dictionary (01 Mar 1998) |
| tylosis ciliaris | Thickening of the tarsal border of the eyelid. Synonym: tylosis ciliaris. Origin: pachy-+ G. Blepharon, eyelid (05 Mar 2000) |
| tylosis linguae | Leukoplakia of the tongue. (05 Mar 2000) |
| tylosis palmaris et plantaris | The occurrence of symmetrical diffuse or patchy areas of hypertrophy of the horny layer of the epidermis on the palms and soles; a group of ectodermal dysplasias of considerable variety, and either autosomal dominant or recessive inheritance. Synonym: ichthyosis palmaris et plantaris, keratoderma palmaris et plantaris, keratoderma symmetrica, keratoma plantare sulcatum, keratosis palmaris et plantaris, tylosis palmaris et plantaris. (05 Mar 2000) |
| tylotic | Relating to or marked by tylosis. (05 Mar 2000) |
| tyloxapol | Oxyethylated tert-octylphenol formaldehyde polymer;a detergent and mucolytic agent used as an aerosol to liquify sputum. (05 Mar 2000) |
| tymazoline | 2-[(Thymyloxy)methyl]-2-imidazoline;a nasal decongestant. (05 Mar 2000) |
| tymovirus | A group of plant viruses with a narrow host range that includes crucifers. Transmission occurs by beetles and mechanical inoculation. (12 Dec 1998) |
| tympan- | See: tympano-. (05 Mar 2000) |
| tympanal | Synonym: tympanic. 2. Resonant. Synonym: tympanitic. (05 Mar 2000) |
| tympanectomy | Excision of the tympanic membrane. Origin: tympan-+ G. Ektome, excision (05 Mar 2000) |
| tympania | <medicine> A flatulent distention of the belly; tympany. Origin: L, fr. Gr, fr. A kettledrum. Source: Websters Dictionary (01 Mar 1998) |