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The hypoglossal canal is a permanent element of the human skull. As well as the hypoglossal nerve, the canal also contains the venous plexus and an arterial branch leading to the dura mater. It emerged from our earlier studies that the venous plexus is a dominant component in this canal. In the present work the morphology and dimensions of the canal were studied on macerated skulls of humans and animals (rhesus monkey, European bison, fox, dog, cat, hare and rat). The hypoglossal canal was found in all the human and animal skulls examined. In both humans and animals the hypoglossal canal was frequently duplicated. The double canal was found in 43% specimens of human skulls. However, no triple division of the hypoglossal canal was found in the material under investigation. It was found that the hypoglossal canal in man, rhesus monkey and European bison had significant dimensions and in fact correlated with the size of skull capacity. This suggests that the hypoglossal canal is an essential venous emissary in man, rhesus monkey and European bison, but that in the remaining species it is of secondary importance in this respect.
Analyses of 69 collections of the tawny owls' pellets (28 containing over 100 prey items) revealed the presence of three rare mammal species on several localities in central and northeastern Poland: Muscardinus avellanarius (11 localities), Sicista betulina (3), and Crocidura leucodon (2). The obtained results supplemented data on their distribution close to the borders of continuous ranges. The Kampinos Forest was confirmed as important refuge of M avellanarius, and the lower basin of the Biebrza Valley for both M. avellanarius and S. betulina.
During a study conducted in 2002–2008 the following 6 species of shrews were recorded in the Silesian Beskid Mts. (Western Carpathians, S Poland): Sorex araneus, S. minutus, S. alpinus, Neomys fodiens, N. anomalus and Crocidura suaveolens. The most widespread was S. araneus (63.4% of locations), followed by S. alpinus (13.4%), S. minutus (12.2%), N. fodiens (7.3%), N. anomalus (2.4%) and C. suaveolens (1.2%). Among dead shrews (n=47) S. araneus comprised 56.6%, S. minutus 21.7%, S. alpinus 10.9%, C. suaveolens 4.3%, N. anomalus 4.3% and N. fodiens 2.2%. During capture with live traps only S. araneus was recorded, constituting 2.5% of all small mammals captured. It was most frequently caught in deforested areas.
This paper is focused on cloning and bioinformatical as well as immunological characterisation of the new vaccine antigen candidate against fasciolosis - Fasciola hepatica phosphoglycerate kinase (FhPGK). The antigen was cloned from the adult fluke by the use of RACE-PCR method. It was found that FhPGK is not a secretory and not a stage specific protein. It is present in all kinds of parasite tissue, particularly in fluke intestine and tegumental as well as subtegumental layers. FhPGK is involved in production of the first ATP molecule in the glycolytic pathway and can be used in vaccination trials in which the strategy is to block fluke's energy metabolism. This is the first, to date, phosphoglycerate kinase cloned from F. hepatica.
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