Ovine hereditary chondrodysplasia (spider syndrome) in Suffolk lambs   总被引：1，自引：0，他引：1  

PH PHILLIPS  CM BUNN  CE ANDERSON 《Australian veterinary journal》1993,70(2):73-74

  相似文献   

Haemophilus somnus infection in the cow as a possible contributing factor to weak calf syndrome: isolation and animal inoculation studies   总被引：8，自引：0，他引：8  

D G Waldhalm  R F Hall  W A Meinershagen  C S Card  F W Frank 《American journal of veterinary research》1974,35(11):1401-1403

  相似文献   

Experimental intraamnionic exposure of bovine fetuses with subgroup 2, type 7 Adenovirus.          下载免费PDF全文

E Stauber  C Card 《Canadian journal of veterinary research》1978,42(4):466-472

Three third trimester fetuses were exposed to a subgroup 2, type 7 adenovirus (adeno 7) by intraamnionic infection. The virus caused preterm delivery of two clinically ill calves and one stillbirth. The two premature calves died 12 and 72 hours after birth. An elevated serum neutralizing antibody titer (1:256) to adenovirus 7 was found in one principal calf at birth. Adenovirus 7 was recovered from several tissues of the live calves and the spleen of the stillborn calf. Fetuses exposed by intraamniotnic injection with virus carrier only, were born healthy after normal gestational periods and no viruses were isolated from the tissues. Clinically ill calves were weak, severely depressed and unable to stand and nurse. Gross postmortem lesions were nonspecific and consisted of petechial and ecchymotic hemorrhages and edema of the gastrointestinal tract. Histopathological lesions included vasculitis, necrosis of the mucosa of the forestomach, mild gastroenteritis and acute, nonsuppurative focal necrosis of the liver, kidney and adrenal gland. Intranuclear inclusion bodies were seen in pericytes, macrophages, hepatocytes, epithelial cells of adrenal cortical sinusoids of the zona glomerulosa and zona fasciculata and renal tubular epithelium.  相似文献   

Pseudocyst of the spermatic cord of a gelding.          下载免费PDF全文

C E Card  S D Haas 《The Canadian veterinary journal. La revue veterinaire canadienne》1997,38(9):567-569

Clinical, echographic, and histopathological features of an unusual enlarging scrotal mass in a 5-year-old gelding are described. Echography of the scrotal mass in this case provided valuable information concerning the nature of the tissue present, and assisted in narrowing the differential diagnosis.  相似文献   

关于内蒙古大兴安岭林区大径材培育的探讨     

策日格  刘科 《内蒙古林业调查设计》2011,34(1):58-59,65

文章通过对内蒙古大兴安岭林区培育大径材的目的、意义、必要性及方法等方面的分析,论述了大径级材培育是促进林区生态、经济和社会协调发展的有力措施。  相似文献   

European corn borer: pheromone polymorphism or sibling species?     

Cardé RT  Roelofs WL  Harrison RG  Vawter AT  Brussard PF  Mutuura A  Munroe E 《Science (New York, N.Y.)》1978,199(4328):555-556

Electrophoretic analyses of the (Z) and (E) pheromone-attracted males of Ostrinia nubilalis (Hübner), the European corn borer, in an area of coexistence indicate that these strains are not freely interbreeding. Although the populations are morphologically indistinguishable, studies of allozyme, pheromone, and hybridization suggest that the (Z) and (E) entities are genetically differentiated, perhaps to the status of semi- or sibling species.  相似文献   

Isotopic fractionation of stratospheric nitrous oxide     

YL Yung  CE Miller 《Science (New York, N.Y.)》1997,278(5344):1778-1780

We propose an isotopic fractionation mechanism, based on photolytic destruction, to explain the 15N/14N and 18O/16O fractionation of stratospheric nitrous oxide (N2O) and reconcile laboratory experiments with atmospheric observations. The theory predicts that (i) the isotopomers 15N14N16O and 14N15N16O have very different isotopic fractionations in the stratosphere, and (ii) laboratory photolysis experiments conducted at 205 nanometers should better simulate the observed isotopic fractionation of stratospheric N2O. Modeling results indicate that there is no compelling reason to invoke a significant chemical source of N2O in the middle atmosphere and that individual N2O isotopomers might be useful tracers of stratospheric air parcel motion.  相似文献   

In vitro induction of swine peripheral blood monocyte proliferation by the fibroblast-derived murine hematopoietic growth factor CSF-1   总被引：1，自引：0，他引：1  

E V Genovesi  R C Knudsen  D J Gerstner  D M Card  C L Martins  J C Quintero  T C Whyard 《Veterinary immunology and immunopathology》1989,23(3-4):223-244

The addition of conditioned medium from murine L929 fibroblasts (MGF) to cultures of swine peripheral blood mononuclear cells (MNL) resulted in growth of cells of macrophage/monocyte lineage (MO). Glass-adherent swine MNL, shown to be greater than 95% phagocytic MO, grew in the presence of MGF, whereas swine blood granulocytes and lymphocytes were not MGF-responsive. Primary and secondary MO growth were directly dependent on MGF presence and concentration. MGF-stimulated MO synthesized DNA, as measured by cellular incorporation of tritium-labeled thymidine (3H-TdR). This mitogenic response was maximal by 5 to 6 days in primary MO cultures and declined thereafter to a lower magnitude in secondary MO cultures. In the presence of MGF, viable MO numbers increased with an approximate population doubling time of 5 to 7 days in primary culture. This growth rate was prolonged, to about 10 to 12 days, for MGF-stimulated MO in secondary cultures. MGF removal from primary and secondary MO cultures resulted in rapid growth cessation and cell death. MGF-stimulated MO could not be sustained in secondary culture beyond 7 weeks. MGF-cultured MO were positive for latex phagocytosis, non-specific esterase, Fc-receptor expression, and could mediate antibody-dependent cell-mediated cytotoxicity. The MO-mitogenic principle of MGF was identified as the murine, macrophage-specific colony-stimulating factor, CSF-1 (M-CSF). The swine MO-proliferative response to MGF was inhibited by addition of monospecific goat antisera to M-CSF. Purified M-CSF stimulated the growth of swine MO from cultures of MNL and primary glass-adherent MO.  相似文献   

Aortic rupture causing cardiac tamponade in a 24‐day‐old Friesian colt with concurrent colonic Chlamydiosis and Balantidiasis          下载免费PDF全文

M. Diel de Amorim  K. Nielsen  B. McKell  Y. Huang  C. Card 《Equine Veterinary Education》2016,28(2):68-73

A 24‐day‐old Friesian colt died suddenly and a physical examination the morning the foal died showed no abnormalities and serum IgG levels >8.0 g/l. Necropsy examination revealed haemopericardium and a 2 cm transverse tear at the root of the aorta. The foal was also found to have Chlamydophila spp. in the epithelium and Balantidium coli on the mucosal surface of the large colon. An aortic rupture is a novel finding in a foal, colonic Chlamydiosis has not been previously reported in horses and Balantidium coli has not been reported in equids in North America.  相似文献   

Epiphyte communities in Mediterranean fragmented forests: importance of the fragment size and the surrounding matrix     

Juan Luis H. Cardós  Isabel Martínez  Victoria Calvo  Gregorio Aragón 《Landscape Ecology》2016,31(9):1975-1995

  相似文献