In order to investigate the morphological characteristics of dendritic cells in the mammary gland of the mouse (C57 BL/6), rat (W), rabbit and cat, the fine structures of the dendritic cells have been observed by the electron microscope. The dendritic cells with the well-developed processes had an irregular shape, and lacked the desmosome. The pinocytotic vesicles and tubular invaginations of the cell membrane were frequently observed, and the mitochondria with the well-developed cristae were located in the restricted region in the cytoplasm of the dendritic cells. The nuclei of dendritic cells were indented. In the mice and rats, the dendritic cells had a few langerhans cell granules (Birbeck granules). From the above results, it is confirmed that the ATPase-positive dendritic cells in the mammary gland are the langerhans cells

Blood samples were obtained from Korean native cattle and dairy cattle of Holstein species in the slaughter house and methylene blue color tests were performed for the detection of the inherited susceptibity to hemolysis. Glucose-6-phosphate dehydrogenase activities expressed as the optical density obtained by methylene blue color test were the highest as 0.54 in male Korean cattle, 0.62 in female Korean cattle and 0.72 in dairy cattle of Holstein species. Percent hemolysis, packed cell volume and plasma protein contents were measured and compared with relation to the results of methylene blue color test and no correlation was observed in each

This experiment was carried out to provide the data of blood chemistry in use of application to clinical diagnosis in racehorses. Blood was collected from 30 racehorses (female 17, male 13). Calcium, inorganic phosphorus, blood glucose, blood urea nitrogen, cholesterol, bilirubin, fibrinogen and ketone body in serum were analyzed. The values of calcium and inorganic phosphorus were maintained a certain level without much variation regardless of sex and species. Ca/P ratio was in the range of 3.13-3.35. The value of blood glucose was 60mg/100ml. Age and sex of racehorses make no difference in the value. The value of blood urea nitrogen and total cholesterol showed a tendency to increase according to the age. Total cholesterol value was somewhat higher in male than in female. The value of total bilirubin showed a tendency to increase according to the age. There was no difference between sexes in the value. The value of fibrinogen showed no apparent difference with age and sex. Ketone body was negative in all of the cases. There was no variation on the species of the racehorses

The prevalence of yeasts in mammary glands of dairy cows and teat cups of milking machines was studied in Chinju area. The rate of subclinical yeast infection in 330 quarters was 3.6 %. Of 12 isolates from the milk, 4 Candida pseudotropicalis, 3 C. tropicalis, 2 C. krusei, 2 C. albicans and 1 Rhodotorula spp were identified. The 91.7 % of the isolates belonged to the genus Candida and C. pseudotropicalis was the predominant species. From 20.5 % of 200 teat cups tested, 51 strains of yeasts were isolated. These were 13 C. pseudotropicalis, 9 C. guilliermondii, 7 C. tropicalis, 5 C. krusei, 5 C. parapsilosis, 3 C. albicans, 2 Torulopsis glabrata, 2 Geotrichum candidum and 5 unidentified yeasts. C. pseudotropicalis was most frequently encountered

Blood coagulation time, bleeding time, clot retraction ability, thrombocyte counts and hematological values under electroacupuncture anesthesia and medicament anesthesia, using 10 mongrel dogs were compared. Blood coagulation time under electroacpuncture anesthesia was shorther than that under medicament anesthesia (p0.001). Bleeding time under electroacupunture anesthesia was shorter than that under medicament anesthesia (p0.01). Clot retraction ability under electroacupuncture anesthesia was better than that under medicament anesthesia (p0.01). Thrombocyte counts under electroacupuncture anesthesia was more increased than that under medicament anesthesia (p0.05). Erythrocyte counts, hematocrit values, hemoglobin contents and leukocytes counts were decreased (p0.01) under medicament anesthesia in comparison with control group, but there was no significant difference under electroacupuncture anesthesia

To elucidate the distribution of mating type of Microsporum canis, originated from animals in Korea, a total of 272 strains of M. canis isolated from dogs and cats were mated with the tester strains of Nannizzia otae. Among 272 strains of M. canis examined, 217 strains(79.8%) were N. otae-, but none of strains showed + mating type. And 55 strains(20.0%) reacted with neither N. otae+nor N. otae-

To examine the selectivity of verapamil, used in the cardiovascular diseases, on alpha-1 and alpha-2 adrenoceptor-induced pressor responses, effects of verapamil on alpha-adrenoceptor agonist-induced pressor responses were investigated in urethane-anesthetized rabbits, spinal rabbits, rats and pithed rats. To evaluate the effects of verapamil on each pressor response induced by norepinephrine, phenylephrine and clonidine, these agonists were previously injected into an ear vein, and the same procedures were performed 1-2 min after treatment with intravenous verapamil. Intravenous verapamil produced dose-dependent depressor response in rabbits and rats. Pressor responses to intravenous norepinephrine (10 micro g/kg) and phenylphrine (30 micro g/kg) were inhibited by pretreatment with intravenous verapamil in rabbits and no difference was noted between the degree of both inhibitions of the pressor response by verapamil. Pressor responses to intravenous norepinephrine (3 micro g/kg), phenylephrine (20 micro/kg) and clonidine (300 micro g/kg) were inhibited by pretreatment with intravenous verapamil in spinal rabbits. No difference was noted between the inhibition of norepinephrine-induced pressor response and that of phenylephrine-induced pressor response by verapamil. The inhibition of clonidine-induced pressor response by verapamil was more prominent than that of norepinephrine- or phenylephrine-induced pressor response. Pressor responses to intravenous norepinephrine (3 micro g/kg) and phenylephrine (10 micro g/kg) were inhibited by pretreatment with intravenous verapamil in rats and no difference was noted between the degree of both inhibitions of the pressor response by verapamil

Some hematological and biochemical indices were assayed in Korean native cattle naturally harbouring Fasciola hepatica infection and compared with uninfected controls. Affected animals revealed reduction in total erythrocyte count and hemoglobin content, and increase in total leukocyte count. Infected cattle had significantly lower levels of serum total protein, serum albumin and magnesium. Significantly higher values were obtained for the serum enzymes asparate aminotransferase and alanine aminotransferase

Ixodes signatus nymphs were subjected to the scanning electron microscopy for the observation of the major physiological sense organs including Haller's organ. Funger prints and variable sensory setae were found on the body surface, and especially well developed setae were identified on the article IV and on the anal lobes. A central button-like organelle and numerous small holes were found in the spiracular plate. The Haller's organ was identified at the distal point of the tarsus I and regarded as the major sensory organ, chemoreceptor. Two types of sensory setae were observed, the shorter ones in front of the organ and the longer ones in distal front as well as behind the organ. The fully opened organ was ellipsoidal and a total of seven basiconic sensory pegs rooted deeply and shaped like well arranged hooks were found inside the organ

In order to know the effect of dexamethasone on the induction of the rabbit viral hepatitis, the pathological changes were observed in the native rabbits, 2 to 6 months old in age, that were injected by dexamethasone and liver emulsion of Angora rabbit naturally infected with viral hepatitis. The native rabbits injected by dexamethasone and liver emulsion were infected with viral hepatitis and died between 2 and 7 days after inoculation. Clinical signs and gross lesions were very similar to those of Angora rabbit which had naturally occurred. In microscopical findings, the hepatic lesions were characterized by peripheral necrosis of the lobules, and peripheral necrosis of the lobules with fatty changes of hepatic cells occurred in a few cases. Perivascular lymphocytic infiltration in the central nervous system was observed in some cases. The lesions of the other organs were very similar to those of Angora rabbit. On the other hand, the native rabbits that were injected by only liver emulsion of Angora rabbit naturally infected with viral hepatitis were not infected with the disease except in very few cases