sarcocystis is a coccidia protozoan develops obligatory in two hosts consisting of the herbivores as an intermediate host (prey) and the carnivores as a host (predator). depend on species, the size of cysts and structure of cyst wall in intermediate hosts are different. the ultrastructure of sarcocystis cysts (sarcocysts) could be a good indication for diagnosis of the parasite species. in the ...

Studies on the amino acid content of the cell wall of gram-positive bacteria have shown them to be composed of relatively few amino acids. One of the principal amino acids found in the cell wall of certain staphylococci is serine (1, 2, 5, 6). Although the optical configuration of staphylococcal cell wall serine has not been determined, Whitney and Grula (8) found that Micrococcus lysodeikticus...

echinoderms are independent and quite special branch of world animals. sea cucumbers are among the strangest members of echinoderm class regarding their structure and physiology. these fauna have been tested with regard to anti-bacterial, anti-fungal, anti-coagulants, anti-virus, cytotoxic, hemolytic and anti-hiv features. in this study, the antibacterial activity of holothuria leucospilota sea...

A new method was introduced for frothing characterization of flotation frothers. Method uses water recovery to develop a new frothability index named water recovery index (WRI). New index was determined for some commercial frothers and results were compared with dynamic frothability index (DFI). Results showed that water recovery index values follow the order of A-65 13016 s/mol > DF-250 6292.4...

background: aneurysm is a blood-filled bulge in the wall of vessels that occurred in abdominal aortic and cerebral vessels. the dilation of artery leads to aneurysm. methods: three dimensional modelling was utilized for a patient with cerebral aneurysm and a normal subject, and additional fluid-structural interaction simulation was performed. we consider pulsatile blood velocity as inlet, and b...

Smith, W. Grady (University of Minnesota, St. Paul), Daniel P. Gilboe, and L. M. Henderson. Incorporation of hydroxylysine into the cell wall and a cell-wall precursor in Staphylococcus aureus. J. Bacteriol. 89:136-140. 1965.-Recent work has shown that hydroxylysine can substitute for lysine in cell-wall synthesis of Streptococcus faecalis, apparently becoming incorporated into cell-wall mucope...

Wall teichoic acids are cell wall polymers that maintain the integrity of the cellular envelope and contribute to the virulence of Staphylococcus aureus. Despite the central role of wall teichoic acid in S. aureus virulence, details concerning the biosynthetic pathway of the predominant wall teichoic acid polymer are lacking, and workers have relied on a presumed similarity to the putative poly...

Staphylococcus simulans bv. staphylolyticus secretes lysostaphin, a bacteriocin that cleaves pentaglycine cross bridges in the cell wall of Staphylococcus aureus. The C-terminal cell wall-targeting domain (CWT) of lysostaphin is required for selective binding of this bacteriocin to S. aureus cells; however, the molecular target for this was unknown. We used purified green fluorescent protein fu...

Thirty years ago, Wall published ?Exergy Ecology Democracy - Concepts of a vital society or proposal for an exergy tax?. This paper discusses this milestone contribution by Wall. It has traced path toward economic, environmental and societal sustainability proposed as robust indicator measuring progress. is divided into two parts. The first focuses on better understanding Wall?s role in today?s...