Color enhanced scanning electron micrograph (SEM) of Hemophilus influenzae. H. influenzae are gram-negative, aerobic bacilli that are nonmotile and nonsporeforming. The encapsulated forms produce suppurative respiratory infections (sinusitis, laryngotracheitis, epiglottis, otitis and, in young children, meningitis). Magnification = x2,300 at 35mm.