| calf diphtheria | A necrotic oropharyngolaryngitis of calves associated with Fusobacterium necrophorum infection that may spread to the lungs. (05 Mar 2000) |
|---|
| artery of calf | <anatomy, artery> One of four or five arteries arising (sometimes by a common trunk) from the popliteal; distribution, muscles and integument of the calf; anastomoses, posterior tibial, medial, and lateral inferior genicular. Synonym: arteria suralis, artery of calf. (05 Mar 2000) |
|---|---|
| avian diphtheria | An infection by the fowlpox virus in which tracheal involvement is especially severe. See: fowlpox. Synonym: fowl diphtheria. (05 Mar 2000) |
| bulldog calf | A calf with a short muzzle and brachycephalic skull, usually resulting from chondrodystrophy; associated with this condition are shortened limbs and anomalies of the vertebral centra; it often results in respiratory and feeding difficulties, and is sometimes fatal. Synonym: bovine achondroplasia. (05 Mar 2000) |
| calf | Synonym: sural region. 2. A young bovine animal, male or female. Origin: Gael. Kalpa (05 Mar 2000) |
| calf-bone | Synonym: fibula. 2. Bone from a calf (young cow) used in orthopaedic reconstruction. (05 Mar 2000) |
| calf pump | Muscular activity of calf that promotes venous flow towards the heart. (05 Mar 2000) |
| gnome's calf | An obsolete term denoting the very full rounded calf occurring in pseudohypertrophic muscular dystrophy affecting the gastrocnemius muscles. (05 Mar 2000) |
| ribonuclease h, calf thymus | <enzyme> A ribonuclease that specifically cleaves the RNA moiety of RNA:DNA hybrids. It has been isolated from a wide variety of prokaryotic and eukaryotic organisms (particularly calf thymus) as well as retroviruses. Registry number: EC 3.1.26.4 (12 Dec 1998) |
| cutaneous diphtheria | An ulcer resulting from infection of the skin by Corynebacterium diphtheriae; systemic manifestations are the same as those of pharyngeal diphtheria. (05 Mar 2000) |
| sea calf | <zoology> The common seal. Source: Websters Dictionary (01 Mar 1998) |
| Nebraska calf scours virus | The bovine rotavirus. See: rotavirus. (05 Mar 2000) |
| neonatal calf diarrhoea virus | One of two virus's causing neonatal calf diarrhoea; a reovirus-like virus is associated with disease in newborn calves, and a coronavirus is associated with disease in calves over 5 days of age. (05 Mar 2000) |
| diagnostic diphtheria toxin | Corynebacterium diphtheriae toxin diluted so that the inoculated dose (0.1 or 0.2 ml) will contain 1/50 th of guinea pig minimal lethal dose. See: Schick test. Synonym: diagnostic diphtheria toxin. (05 Mar 2000) |
| diphtheria | <infectious disease> An acute infectious disease caused by toxigenic strains of Corynebacterium diphtheriae, acquired by contact with an infected person or a carrier of the disease, which is usually confined to the upper respiratory tract. It is characterised by the formation of a tough membrane (false membrane or pseudomembrane) attached firmly to the underlying tissue that will bleed if forcibly removed. In the most serious infections the membrane begins in the tonsillar (faucial) area on one tonsil and may spread to involve the other tonsil, uvula, soft palate and pharyngeal wall, from where it may extend to the larynx, trachea and bronchial tree and may cause bronchial obstruction and death by hypoxia. Diphtheria also occurs in a cutaneous form and may rarely involve the eyes, middle ear, buccal mucosa, genitalia and umbilical stump, usually secondarily. Systemic effects, chiefly myocarditis and peripheral neuritis, are caused by the exotoxin produced by C. Diphtheriae. Synonym: Bretonneau's angina. Origin: Gr. Diphthera = leather (18 Nov 1997) |
| diphtheria antitoxin | An equine antitoxin against the toxin of corynebacterium diphtheriae, used for the treatment of diphtheria. It is to be differentiated from diphtheria toxoid which is used for the prevention of diphtheria. (12 Dec 1998) |