Restriction endonuclease analysis and DNA hybridization revealed five ovine strains of Mycobacterium paratuberculosis from South Africa had identical DNA patterns to an ovine strain from Canada. Genetically this strain type has features in common with the two major groups of M. paratuberculosis.

studies on the pathogenesis of babesia ovis infection following blood transfusion of infected blood to sheep with intact spleen and splenectomised sheep showed that all animals developed fever concurrent with a parasitaemia that were occurred within 2-4 days post-inoculation (dpi), clinical signs of disease were severe and included varying degrees of anorexia, listlessness, anaemia, moderate ja...

ovine pulmonary adenocarcinoma (opa) was studied in the lungs of 15 naturally-affected sheep (9 with classical and 6 atypical lesions) by transmission electron microscopy. two lung samples from normal sheep were used to develop the ultrastructural criteria. pathologic lesions consisted of focal-multifocal to coalescent nodules or masses in the cranioventral or diaphragmatic lobes. ultrastructur...

theileria species are common in tropical and subtropical regions and cause great economical losses inruminants. two species, t. lestoquardi and t. ovis, are suspected to cause ovine theileriosis in iran. theepidemiological aspects of ovine theileriosis in iran are poorly understood and further investigations bysensitive and precise techniques are required. in a previous study, a sensitive and s...

Mouse placental lactogen was purified 1840-fold from BALB/c placentae from days 14-18 of gestation with an overall yield of 29%. The purification procedure included alkaline homogenization and extraction, ammonium sulfate precipitation, hydrophobic interaction chromatography on Phenyl-Sepharose, ion-exchange chromatography on CM- and DEAE-cellulose, and gel exclusion chromatography on Sephadex ...

Natural killer (NK) cells are well recognized as playing a key role in innate immune defence through cytokine production and cytotoxic activity; additionally recent studies have identified several novel NK cell functions. The ability to study NK cells in the sheep has been restricted due to a lack of specific reagents. We report the generation of a monoclonal antibody specific for ovine NKp46, ...

BACKGROUND Endothelial cell co-culture assays are differentiation assays which simulate the formation of capillary-like tubules with the aid of a supportive cell layer. Different cell types have been employed as a supportive cell layer, including human pulmonary artery smooth muscle cells (PASMCs) and human mammary fibroblasts. However, these sources of human tissue-derived cells are limited, a...

Aim The few fish species able to reproduce across wide osmotic ranges either plastically acclimate sperm performance to, or are locally adapted different salinities. invasive round goby (Neogobius melanostomus) is spreading in Eurasia and the Americas, into both fresh brackish water. We aim understand if reproduction salinities affected by an ability acclimate. Location Brackish freshwater syst...