This paper describes the DTH system for providing subscription audio and video services in Ecuador. It enumerates the DTH services presently available in-country and provides technical details and coverage information for the satellites that these services employ. It also describes the deployment and installation of the receiving antennas for each of the commercially-available systems. Finally,...

PURPOSE Because immune rejection is likely to be a major barrier to successful retinal transplantation, it is important to determine whether immune privilege for allogeneic retinal grafts is a feature of the subretinal space and vitreous cavity. METHODS Newborn neural retinas of C57BL/6 mice were implanted into the subretinal space, vitreous cavity, or subconjunctival space of eyes of adult B...

PURPOSE To determine whether injection of a soluble antigen, ovalbumin (OVA), into the anterior chamber of cynomolgus monkey eyes would impair the ability of these animals to subsequently develop delayed hypersensitivity when confronted by this antigen in immunogenic form. METHODS OVA or phosphate-buffered saline was injected into the anterior chamber of adult cynomolgus monkeys that were sub...

Selected L3T4- and Lyt 2- T-cell subpopulations from Listeria monocytogenes-infected mice were transferred into syngenic recipients, and their capacity to adoptively mediate protection against L. monocytogenes and delayed-type hypersensitivity to listerial antigens was determined. Both functions were markedly reduced by pretreatment of cells with either anti-L3T4 or anti-Lyt 2.2 antibodies plus...