Lymphoma associated with an epizootic of lymphocytic choriomeningitis in Syrian hamsters (Mesocricetus auratus).

A hamster-associated epizootic of lymphocytic choriomeningitis (LCM) virus infection in medical center personnel at the University of Rochester in 1973 necessitated prompt termination of the Syrain hamster colony. Necropsies were performed on 130 hamsters, blood speciments were obtained from 60 for serotest, and viral isolation procedures were done on 47. Active virus infection, as shown by virus isolation, was associated with the presence of lymphoreticular infiltrate in liver and kidney.

Postmortem pink teeth.

A series of cases is reported in which pink teeth were observed during the postmortem period. Most cases were associated with decomposition in a moist environment. Experimental procedures led to the extraction of pink material from dentin and demonstration that hemoglobin and serum proteins were present.

The vagus reaction as a possible cause of severe complications of radiological procedures.

Six severe reactions which appeared to be mediated via the vagus nerve were encountered in the course of various radiological procedures. Four patients were treated with intravenous atropine and responded successfully. The vagus reaction is proposed as a possible mechanism of death in the "allergic" reaction to contrast media seen during radiological procedures.

Intracisternal virus-like particles in two guinea pig mammary adenocarcinomas.

Virus-like particles were found in spontaneously arising mammary adenocarcinomas from 2 male guinea pigs. The type-B particles were 100 nm in diameter and budded from the apex of stalks into cisternae. Examination of normal and neoplastic tissues from other guinea pigs failed to reveal similar particles.

Mammary neoplasia in the guinea pig (Cavia porcellus).

Mammary tumors are reported in four guinea pigs and the literature is reviewed. It is concluded that mammary adenocarcinomas are second only to pulmonary adenomas as the most common epithelial tumors in the guinea pig. The sex incidence of mammary tumors is almost equal and both young and old animals are susceptible.

Alterations of selected intestinal enzymes in hamsters with hamster enteritis syndrome.

Portions of duodenum, jejunum, and ileum from 21 hamsters clinically affected with enteritis were examined for enzymes. Utilizing a variety of techniques, the activities of alkaline phosphatase, nonspecific esterases, leucine aminopeptidase, beta-glucuronidase, and methyl green pyroninophilia were determined. The activities of enzymes normally associated with tissue proliferation and active protein synthesis were decreased, whereas those enzymes associated by cytolysis were increased.

The relationship of emotionality and worry components of anxiety to motor skills performance.

Three studies investigating the relationship between components of evaluation anxiety and typing performance are reported. Subjects represented business college students enrolled in typing (N=49) and English (N = 39) classes, applicants for clerical positions (N=50), and college students (N=11). State-trait anxiety inventory A-trait scores (Study I only) and scores on a 10-item questionnaire designed to assess both the cognitive (worry) and emotional components of state anxiety were correlated with performance measures reflecting both typing speed and accuracy.

Multiple animal bite wounds: A case report.

A case of multiple animal bite wounds is presented along with the techniques used to apprehend the culprits. The victim was a 13 month-old black female who had in excess of 80 puncture wounds. Initially the wounds were thought to be caused by a mechanical instrument but, after an autopsy, were determined to be caused by a large animal.

Spontaneous aortic aneurysms in blotchy mice.

The pathogenesis of aneurysm formation was studied in Blotchy (Blo) mice which have a hereditary defect in collagen and elastin cross-linking. Elastin breakdown began at an early age and progressed rapidly. Changes observed included replacement of elastica by fibroblasts and ground substance.

A histopathological study of canine and feline ovarian dysgerminomas.

Clinical and pathological features of ovarian dysgerminomas occurring in two dogs and a cat are presented. The feline neoplasm had morphological characteristics closely resembling those of dysgerminomas in women. The feline and one canine neoplasm occurred in young animals as compared to other reported animal dysgerminomas.