Class II histocompatibility complex antigens on the retinal vascular endothelium may allow these cells to function as antigen-presenting cells to circulating T cells. The present study investigated induction of class II antigens in vitro to characterize the response under controlled conditions. Retinal vascular endothelium from Lewis and Brown Norway rats (high versus low responders in experime...

Helicobacter pylori persistently colonizes the gastric mucosa of half the human population. It is one of the most genetically diverse bacterial organisms and subvariants are continuously emerging within an H. pylori population. In this study we characterized a number of single-colony isolates from H. pylori communities in various environmental settings, namely persistent human gastric infection...

Centre and purified using the appropriate Synsorbs (Chembiomed Ltd., Alberta, Canada). Monoclonal anti-A was isolated in the M.R.C. Human Biochemical Genetics Unit. In one experiment lactase from two individuals of different blood group (A and 0) was purified by immunoaffinity chromatography as described in Potter et al. (1985). Using the A blood-group specific antibodies and the lectin from He...

diffusion flame in a dust cloud combustion in a counterflow configuration is investigated in this research. it is presumed that the fuel particles vaporize first to yield a gaseous fuel to oxidize with the gas phase. the reaction rate is assumed to be of the arrhenius type. conservation equations for the non-unity lewis number are solved and the flame temperature with the variations of differen...