:i^ 



"Jf;, 



%M 



V 



IK'Ctron Microscopy of the Legionnaires' Disease Bacterium 



*# 



Figure 1. Electron micrograph of Legionnaires' disease bacteria grown on bacteriologic medium. Note enclosure 

 of organisms by a double envelope consisting of inner (IM) and outer (OM) triple-layered "unit" membranes. 

 Vacuoles (v) are present in some organisms, (osmium fixation. X90.000). 



43 



