Naturally Occurring CAR Bacillus Infection in a Laboratory Rat Colony and Epizootiolgical Observations

Naturally occurring ehrlichiosis in Egyptian dogs

Canine ehrlichiosis has emerged as one of the most clinically important tick-borne diseases affecting dogs. Eighty-five naturally infected dogs have been investigated, the most consistent clinical signs recorded were fever, emaciation and lymphoadenopathy, anemia, monocytosis, thrompocytopenia, hypoalbuminemia, elevation in liver enzymes and total bilirubin were the most remarkable changes asso...

Naturally occurring schwannoma in a Fischer 344 rat.

Fig. 3. Fibrin thrombus with organization in right basal vein. HE. Bar = 250 wm. great cerebral vein, the difference in cerebral venous anatomy may account for the thrombosis of the right basal vein and the lack ofthrombosis in the great cerebral vein ofthe present canine c a ~ e. ~. ~ The fresh fibrin thrombus in the midportion of the left basal vein was considered to be responsible for the le...

A naturally occurring rat model of X-linked cone dysfunction.

PURPOSE To describe the electrophysiological, histologic, and hereditary features of a naturally occurring rat model of cone function loss. METHODS Dark- and light-adapted electroretinograms (ERGs) were used to evaluate retinal function. The thickness and architecture of the retina were observed by light microscopy. The cone density was investigated by wholemount immunocytochemistry. The inhe...

Coinfection Associated with Naturally Occurring Cryptosporidiosis in Broilers

Naturally occurring Ehrlichia chaffeensis infection in coyotes from Oklahoma.

A nested polymerase chain reaction assay was used to determine the presence of Ehrlichia chaffeensis, E. canis, and E. ewingii DNA in blood samples of free-ranging coyotes from central and northcentral Oklahoma. Of the 21 coyotes examined, 15 (71%) were positive for E. chaffeensis DNA; none was positive for E. canis or E. ewingii. Results suggest that E. chaffeensis infections are common in fre...