Cultural and Biochemical Characterization of the Legionnaires' Disease Bacterium 





Figure 1. Gram stain using carbol tuciisin instead of safranin Figure 2. Gram stain using carbol luchsin counterstaiii (LDB 



for the counterstain (LDB strain Piiiladeiphia 1 from CYE strain Knoxville 1 from CYE agar). 



agar). 



Figure 3. Fat stain of LDB. 



Figure 4. Gime'nez-stained smear of an LDB-infected egg 

 yolk sac, courtesy of Dr. Joseph E. McDade. 



