| cephalorrhachidian index | The figure obtained by multiplying the pressure of the cerebrospinal fluid, after fluid has been withdrawn by spinal puncture, by the quantity of fluid withdrawn and then dividing by the original pressure. Synonym: cephalorrhachidian index. (05 Mar 2000) |
|---|---|
| cephalosporanic acid | The basic chemical nucleus upon which cephalosporin antibiotic derivatives are based. (05 Mar 2000) |
| cephalosporanic acids | <chemical> A family of organic compounds that are composed of a dihydrothiazine ring and a beta-lactam ring. Pharmacological action: cephalosporins. (12 Dec 1998) |
| cephalosporin | <drug> A large class of antibiotics similar both chemically and in their mode of action to penicillin's. They are tetracyclic triterpene broad-spectrum antibiotics first isolated from the culture filtrates of mediterranean fungus acremonium (cephalosporium acremonium). They contain the beta-lactam moiety thia-azabicyclo-octenecarboxylic acid also called 7-aminocephalosporanic acid and are effective against gram-positive bacteria. Examples include: Keflex, Ceftin, Rocephin, Cefzil, Monocid, Keftab, Vantin, Ceclor, Duricef, Suprax and Cefobid. (25 Jun 1999) |
| cephalosporin 7-alpha-hydroxylase | <enzyme> A dioxygenase from streptomyces clavuligerus; requires 2-oxoglutarate, fe2+ and a reducing agent such as ascorbic acid Registry number: EC 1.14.11.- (26 Jun 1999) |
| cephalosporin C transaminase | <enzyme> Acts on cephalosporin c and a number of d-amino acids; alpha-ketoadipic and alpha-ketoglutaric acids act as acceptors Registry number: EC 2.6.1.- (26 Jun 1999) |
| cephalosporin resistance | <microbiology> Non-susceptibility of an organism to the action of the cephalosporins. (12 Dec 1998) |
| cephalosporinase | <enzyme> Registry number: EC 3.5.2.- (12 Dec 1998) |
| Cephalosporium | Former name of Acremonium. (05 Mar 2000) |
| cephalostat | Synonym: cephalometer. Origin: cephalo-+ G. Statos, stationary (05 Mar 2000) |
| cephalothin | <chemical> A cephalosporin antibiotic. Pharmacological action: cephalosporins. Chemical name: 5-Thia-1-azabicyclo(4.2.0)oct-2-ene-2-carboxylic acid, 3-((acetyloxy)methyl)-8-oxo-7-((2-thienylacetyl)amino)-, (6R-trans)- (12 Dec 1998) |
| cephalothoracic | Relating to the head and the chest. (05 Mar 2000) |
| cephalothoracopagus | Conjoined twins with the bodies fused in the cephalic and thoracic regions. See: conjoined twins. Origin: cephalo-+ G. Thorax, chest, + pagos, something fixed (05 Mar 2000) |
| cephalothoracopagus asymmetros | A form of cephalothoracopagus in which only one of the faces is well developed. Synonym: cephalothoracopagus asymmetros. (05 Mar 2000) |
| cephalothoracopagus disymmetros | A form of cephalothoracopagus with the fused head showing equally developed faces directed laterally. (05 Mar 2000) |