The persistent right aortic arch caused stenosis and dilatation of the esophagus in a two-month-old mongrel bitch. The esophagus and trachea of this bitch were restrained by a vascular ring formed by the dorsal base of the heart, the persistent right aortic arch, and the persistent ductus arteriosus. Experimental thoracotomy was performed and the ductus arteriosus excised. Two days after operation the bitch began to have solid feed and was in the due course of recovery. X-ray examination revealed that there was a diverticulum in the esophagus.
administration of the adrenal corticoisterod, betamethasone (S-661). A daily dose of 0.5-1.0 mg per head (or 0.4 mg per kilogram of body weight) was used. (1) Of 103 suckling pilgets suffering from diarrhea 83 (81.3%) recovered within one or two days. (2) Of piglets which had not responded well to treatment with sulfa drugs 80% showed good results in the administration of betamethasone. (3) Betamethasone revealed no side effects at all.
Some of the birds kept in the Ueno Zoological Gardens, Tokyo, were inoculated against Newcastle disease on February 11, 1967. Death occurred continually among the other birds not vaccinated in the zoo over a period from late February to late April of the same year. Autopsy revealed hemorrhage and congestion inside the cranium and brain. A brid of “parawan ko-kujaku” Polyplaectron emphanum died in late April and examined histologically with no noticeable findings. An etiologic agent, however, was isolated from it and could be passaged in embryonating eggs. It was subjected to the neutralization test and hemagglutination-inhibition test with standard immune serum against Newcastle disease virus (NDV), and identified as NDV. The infected bird had shown rather acute clinical symptoms. Chicken's heads purchased as bait for predatory birds were incriminated as source of infection. Accordingly, the present case was presumed to belong to the Asian type of the disease.
Five strains of acid-fast bacilli isolated from nonvisiblelesion reactors were examined for biochemical characters and pathogenicity for experimental animals. Of them, two strains isolated from imported cattle which had given positive johnin test, showing no lesions characteristic of Johns'e disease at autopsy, were identified as Mycobacetrium avium. One nonphotochromogenic and two scotochromogenic strains isolated from non-visible-lesion reactors to tuberculin test induced macroscopic lesios of varying deg rees in the omentum, liver, and spleen, and at the site of inoculation (abdomen) when infective doses of 106-107 viable units had been injected intraperitoneally into guinea pigs. These infected animals gave positive tuberculin tests carried out with a 50-fold dilution of tuberculin. A stronger reaction to mammalian tuberculin than to avian tuverculin was observed in guinea pigs infected with the two scotochromogenic. strains A reverse relationship was obtained from guinea pigs infected with the nonphotochromogenic strain, which was identified as M. avium.