We are surrounded by a sea of microorganisms that threaten to overwhelm us. This threat is made dramatically clear by the condition of AIDS, where the immune system is crippled by a slowly progressive infection extending over a period of years. In an AIDS patient, opportunistic infectious agents, including bacteria, viruses, and fungi, take advantage of the weakened immune system to invade and ...

Interaction of microgram quantities of highly purified rabbit anti-TNP antibodies with TNP-substituted HeLa, HEp-2, and L cells caused an intense stimulation of radioactive nucleoside ([(125)I]UdR and [(3)H]TdR) uptake which was maximal 24-72 h after exposure of cells to antibody. The stimulation of nucleoside uptake and presumaly DNA synthesis was shown to be immuno logically mediated because ...

We are surrounded by a sea of microorganisms that threaten to overwhelm us. This threat is made dramatically clear by the condition of AIDS, where the immune system is crippled by a slowly progressive infection extending over a period of years. In an AIDS patient, opportunistic infectious agents, including bacteria, viruses, and fungi, take advantage of the weakened immune system to invade and ...

1. A modified falling ball viscometer (rolling ball viscometer) for blood and other humors is presented. It is capable of easily measuring flow properties at several stresses, as is required to define satisfactorily the properties of anomalous flow systems. At high shearing stresses, apparent specific viscosity values of 2.5 + are observed, corresponding to 2.2 +/-0.2 reported as possible with ...