Abstract: The present invention includes compositions, methods and systems for inducing immune tolerance using antigen presenting cells by infecting isolated antigen presenting cells with an effective amount of respiratory syncytial virus (RSV) or portions thereof sufficient to infect the antigen presenting cells and contacting CD4+, CD8+ or both CD4+ T cells and CD8+ T cells with the RSV-infected antigen presenting cells, wherein the CD4+, CD8+ or both CD4 and CD8+ T cells are rendered tolerogenic as measured in vitro by a mixed leukocyte reaction.

Abstract: A portable marking tool having a cylindrical housing and a concentric cylinder slidably supporting the hammer member for delivering an impact to a marking die. A charge of air is built up in the housing which is suddenly imposed on the piston-like hammer member when the charge of air is built up to overcome a predetermined opposing load. In one embodiment, the opposing load is afforded by a pressure regulated chamber and in another embodiment by an adjustable spring load.

Abstract: A method and apparatus for casting steel slugs which utilizes a measured charge of molten steel discharged centrally of a rotating table having radial channels to distribute the metal rapidly to circumferentially-spaced, individual, trunnion-mounted receptacles at the end of each channel. The receptacles are designed to have a center of gravity outside the trunnion axis when empty, and inside the trunnion axis when charged. After a predetermined cooling period, a mechanical latch release allows the rotating, loaded receptacles to dump radially to a suitable conveyor and the cycle may be repeated.