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1,248 articles for “T-cell”
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Research ArticleOpen accessIn the abstractHistological Study of the Caecal Tonsil in the Cecum of 4- 6 Months of Age White Leghorn ChicksM. Rezaian, S. HamediCecum, the largest part of chicken’s large intestine, has an important role in liquid absorption and cellulose digestion. It acts as a defensive organ as well due to the presence of large masses of diffuse and nodular lymphatic tissue in lamina propria and sub mucosa. The cecal tonsil activity has been proved to be depended on the activity of bursa … …American Journal of Animal and Veterinary Sciences, Vol. 2, Issue 2 · 30 Jun 2007 · 8,067 accessesView PDFCite
Research ArticleOpen accessIn the abstractEffect of pH on the Conformation and Biological Activity of Clostridium septicum Alpha-toxin, a Pore-forming HemolysinB.M. Hang'ombe, T. Kohda, M. Mukamoto, S. KozakiThe effects of pH on the pore-forming Clostridium septicum alpha-toxin that causes myonecrosis was assessed at pH 5.0, 7.0 and 9.0 by measuring circular dichroism and its biological activity. Incubation of the toxin at pH 5.0 increased the hemolytic activity measured in murine red blood cells. On the other hand, incubation of the toxin at pH 9.0 drastically reduces the … …American Journal of Animal and Veterinary Sciences, Vol. 2, Issue 2 · 30 Jun 2007 · 6,902 accessesView PDFCite
Research ArticleOpen accessIn the abstractBiomedicine and Informatics Model of Alzheimer's DiseaseKang Cheng, Chang-Hua ZouIn a perspective of biomedicine and informatics, the mechanism of Alzheimer's, senile amnesia, or other aging-associated and cognitive impairment related diseases involve four important informative processing procedures: propagation, consolidation, retrieval and cognition, In this study, we systematically model the four procedures based on published experimental data. When modeling the propagation, we develop an equivalent circuit of biological membrane to describe … …American Journal of Biochemistry and Biotechnology, Vol. 3, Issue 3 · 28 May 2007 · 6,824 accessesView PDFCite
Research ArticleOpen accessIn the abstractAn Efficient Ant Algorithm for Swarm-Based Image ClusteringSalima Ouadfel, Mohamed BatoucheA collective approach to resolve the segmentation problem was proposed. AntClust is a new ant-based algorithm that uses the self-organizing and autonomous brood sorting behavior observed in real ants. Ants and pixels are scatted on a discrete array of cells represented the ants’ environment. Using simple local rules and without any central control, ants form homogeneous clusters by moving pixels … …Journal of Computer Science, Vol. 3, Issue 3 · 31 Mar 2007 · 7,155 accessesView PDFCite
Research ArticleOpen accessIn the abstractAqueous Extract of Inonotus bliquus (Fr.) Pilat (Hymenochaetaceae) Significantly Inhibits the Growth of Sarcoma 180 by Inducing ApoptosisCaifa Chen, Weifa Zheng, Xiaowen Gao et al.Inonotus obliquus (Fr.) Pilat (Hymenochaetaceae) has been widely used as a folk medicine to treat various cancers in Russia, Poland and most of Baltic countries for literally more than four centuries. However, in spite of its therapeutic significance for cancers, this fungus has not been studied systematically for the mechanisms of antitumor activity. In this study, we report the effects … …American Journal of Pharmacology and Toxicology, Vol. 2, Issue 1 · 31 Mar 2007 · 21,110 accessesView PDFCite
Research ArticleOpen accessIn the abstractOptimum Conditions for Measuring Dehydrogenase Activity of Aspergillus niger using TTCA. E. Ghaly, N. S. MahmoudThe suitability of the triphenyl tetrazolium chloride (TTC) for dehydrogenase activity measurement of the vegetative cells of the fungal species Aspergillus niger was investigated. The triphenyl formazan (TF) yield increased with the increases in TTC concentration, pH, temperature and incubation time within the studied ranges. The effects of individual parameters, as well as the combined effects, on the TF yield … …American Journal of Biochemistry and Biotechnology, Vol. 2, Issue 4 · 31 Dec 2006 · 9,002 accessesView PDFCite
Research ArticleOpen accessIn the abstractHigh Concentrations of Glucose can Activate or Inhibit Human Erythrocyte Aminolevulinate Dehydratase in vitro Depending Exposure TimeJ. C. Soares, D. Gabriel, V. Folmer et al.Hyperglycemia can cause oxidative stress and inactivate susceptible enzymes. In the present investigation we examined whether short-term incubations (24 or 48 h) with high concentrations of glucose (10-200 mmol L-1) inhibit ALA-D from human erythrocytes. Incubations of erythrocytes for 24 h with glucose (10 up to 40 mmol L-1) resulted in an increase of δ-ALA-D activity (P<0,001). Incubations of erythrocytes … …American Journal of Biochemistry and Biotechnology, Vol. 2, Issue 4 · 31 Dec 2006 · 6,686 accessesView PDFCite
Research ArticleOpen accessIn the abstractMolecular Characterization of Soybean Mosaic Virus NIa Protein and its Processing Event in Bacterial ExpressionBong K. Choi, Jae S. Park, Hye J. Ahn et al.Soybean mosaic virus (SMV)-CN18 is an Rsv resistance-breaking (RB) isolate to overcome soybean resistance genes Rsv1, Rsv3 and Rsv4. The aim of this study was to characterize nuclear inclusion protein a (NIa protein) of RB isolate at the molecular level and demonstrate its processing into genome-linked protein (VPg) and NIa-Pro domains in Esherichia coli containing a bacterial expression pET vector … …American Journal of Biochemistry and Biotechnology, Vol. 2, Issue 4 · 31 Dec 2006 · 6,902 accessesView PDFCite
Research ArticleOpen accessIn the abstractBiochemical Effects of Recombinant Porcine Somatotropin on Pig Fetal Growth and Metabolism: A ReviewD. Villanueva-García, S. A. Olmos-Hernández, D. Mota-Rojas et al.Prenatal development is mainly dependent on a close interrelation between nutritional supply use and regulation by hormones and growth factors. Mechanisms during early embryonic development are sensitive to manipulation through selected management strategies of the sow and modifications of this strategy may serve as a model for the examination of molecular and cellular events controlling early embryonic growth. The administration … …American Journal of Biochemistry and Biotechnology, Vol. 2, Issue 4 · 31 Dec 2006 · 6,620 accessesView PDFCite
Research ArticleOpen accessIn the abstractWound Healing Process of Uncomplicated “Rusterholz” Ulcer, Following Treatment by Wooden Block and Hoofgel® in Bovine Hoof: Histopathological AspectsH. Azarabad, I. Nowrouzian, E. Soleymani et al.A broad and very detailed histopathological knowledge on cutaneous wound healing particularly in human skin is available, but few studies have documented this event in bovine claw sole ulcers. It seems the mechanism of wound healing might be basically the same followed by second intention healing which is finished in a period of time by formation of granulation tissue in … …American Journal of Animal and Veterinary Sciences, Vol. 1, Issue 2 · 31 Dec 2006 · 7,847 accessesView PDFCite