[Pulmonary actinomycosis grafted on former tuberculous lesions. Report of one case (author's transl)].

The occurrence of actinomycosis localized in former tuberculosis cavities in a 39-year-old woman is reported. Exeresis of the lesions allowed the discovery of Actinomyces israelii in one of the cavities which no longer communicated with the bronchial tree. In contrast to diffuse actinomycosis found in immuno-depressed patients, this form of the disease was localized in a woman in good health.

Enterotoxigenic colibacillosis in colostrum-fed calves: pathologic changes.

Enterotoxigenic colibacillosis was experimentally produced in 8 of 9 colostrum-fed calves orally given 10(11) Escherichia coli. The eight calves developed profuse diarrhea accompanied by dehydration and depression. At 12 hours after exposure, all calves were euthanatized for necropsy and for collection of tissues for microscopic examination.

Thymic dependence of immunity to Eimeria falciformis var. pragensis in mice.

Athymic (nude) mice, their normal littermates, and Swiss white mice were infected with 750 oocysts of Eimeria falciformis var. pragensis and reinfected twice with 20,000 oocysts, 20 and 40 days after the primary infection. The prepatent and patent periods of the primary infection were similar in each group of mice; however, the athymic mice discharged more oocysts.

Effects of acquired resistance on infection with Eimeria falciformis var. Pragensis in mice.

Mice immunized with infections of 500, 5,000, or 20,000 oocysts of E. falciformis var. pragensis were reinfected with 20,000 and 100,000 oocysts at 20 and 38 days, respectively, after the initial infection.

The pathological changes caused by Eimeria falciformis var pragensis in mice.

Groups of Swiss white mice weighing 25-28 grams were infected orally with 500, 2,000, 5,000 or 20,000 oocysts of Eimeria falciformis var pragensis. Depression, anorexia, weight loss, diarrhea or dysentery, and dehydration were most pronounced at eight to ten days postinfection. The highest mortality, 31%, occurred in mice infected with 20,000 oocysts.

Cold-agglutinin hemolytic anemia and Haemobartonella canis infection in a dog.

Cold-agglutinin hemolytic anemia in a dog was manifested by weakness, progressive hemolytic anemia, hematuria, and hemoglobinuria. Corticosteroid therapy failed to alleviate the anemia. The condition became complicated by Haemobartonella canis infection berminally.

The life cycle of Eimeria falciformis var. pragensis (Sporozoa: Coccidia) in the mouse, Mus musculus.

The life cycle of Eimeria falciformis var. pragensis, established from a single oocyst, is described in experimentally infected mice (Mus musculus). The coccidium had a prepatent period of 7 days and a patent period of 10--16 days.

Zinc, cadmium, and iron interactions during intestinal absorption in iron-deficient mice.

Zinc absorption from a test dose of (65Zn) zinc chloride was increased in mice with a high capacity to absorb iron induced by a low-iron diet. When radiolabelled zinc chloride in concentrations varying from 0.025 to 0.

[The resistance to infection of digestive sutures. Experimental study (author's transl)].

The authors study the effects of severe sepsis due to pathogenic gems in large quantity an healing of the suture of the ileum in the rabbit. Contamination of the suture did not lead to any breakdown of the suture whatever the germ. These experimental facts, compared with the data in the literature suggest that the peritoneal serosa ensures efficacious anti-infectious defence, permitting healing of intra-peritoneal digestive sutures in spite of the septic nature of the intestinal contents.

Effects of immune-mediated enteroluminal neltrophil emigration on intestinal function in pigs.

Intestinal function was assessed in cannulated loops of porcine proximal jejunum during immune-mediated emigration of neutrophils into the intestine. Net water, net sodium, net chloride, undirectional sodium and unidirectional chloride fluxes were measured before and after intestinal exposure to an antigen in both sensitized and nonsensitized pigs. Neutrophil emigration was assessed histologically.

Myopathy and myoglobinuria in a wild white-tailed deer.

Fatal myopathy similar to "capture myopathy" described for African game was diagnosed in a wild white-tailed deer. Clinical signs included depression, inability to rise or stand, and myoglobinuria. Values for serum creatine phosphokinase, glutamic oxaloacetic transaminase, and blood urea nitrogen were high.

Suppression of growth of Vibrio cholerae in the intestine of immunized mice.

In ligated intestinal loops of actively immunized adult mice, growth of V. cholerae 569B was suppressed approximately seven fold when compared to bacterial growth in non-immune animals. Similarly, growth of V.

Antibody cross-linking as a factor in immunity to cholera in infant mice.

Several antibody preparations were tested for their ability to reduce adsorption of Vibrio cholerae to isolated intestinal epithelial cells, and this ability was related to agglutination and protective activity in infant mice. The results demonstrate that (1) the reduction in adsorption of V. cholerae to epithelial cells correlates with the degree of agglutination for given antibody preparation; (2) intact tantibodies protect infant mice from cholera only at concentrations that agglutinate the bacteria; and (3) purified antibodies to flagellar antigens protect infant mice from cholera.

Immune-mediated emigration of neutrophils into the lumen of the small intestine.

By using pigs sensitized to bovine serum albumin (BSA), it was found that exposure of the intestinal mucosa to BSA induced, in 4 h, the emigration of large numbers of neutrophils into the intestinal lumen. This response was specific for the immunizing antigen and could be transferred to nonimmune animals with immune serum. The emigration of neutrophils through the intestinal mucosa was not accompanied by the edema, hemorrhage, and thrombosis which were apparent after intracutaneous inoculation of BSA into the same animals.

A comparison between the active cutaneous Arthus reaction and immune-mediated enteroluminal neutrophil emigration in pigs.

The induction of neutrophil emigration into the intestinal lumen in bovine serum albumin immune and nonimmune pigs by mucosal exposure to bovine serum albumin was studied using a ligated intestinal loop technique. In order to compare the response in the skin to that in the intestine, test materials were inoculated intracutaneously as well as enterally. Several histochemical procedures were applied to the intestinal mucosa and skin for evaluation of responses.

The vascular architecture of the porcine small intestine.

The vascular anatomy of the porcine small intestine was studied by injection of intestinal vessels with India Ink. Examination of transverse and longitudinal serial sections of the injected intestine facilitated a three-dimensional interpretation of the vascular pattern. An artery from the mesentery penetrated the tunica muscularis, supplied muscular branches and passed on to the submucosa where it formed an arterial rete.

Self-optimizing, self-learning system in pictorial pattern recognition.

A system of computer programs discriminates between pictorial patterns by determining a substantial number of numerically encoded pattern properties. Supervised learning is used to find both an optimum decision sequence and the thresholds for decision rules. These are applied to patterns from an object set to test the consistency of the classification procedure.