WebWire, Dec. 3, 2007 An inhaled immune system stimulant protects mice against lethal pneumococcal pneumonia and other deadly bacterial, viral and fungal infections of the lungs, a research team led by scientists at the University of Texas M. D. Anderson Cancer Center reports at a major scientific meeting. UTMB Department of Microbiology and Immunology researcher Johnny Peterson is a co-author of the research paper.