Keywords: Legionella Silver Stain.jpg en A silver stain of <i>Legionella pneumophila</i> the bacteria that causes Legionellosis Although I got this image from a commercial website it is clearly labeled as from the CDC This website routinely uses images from Wikipedia which is a good thing so no issue should be taken with using an presumably public domain image from their website www usmlerx com William Cherry 2010-05-28 Legionella pneumophila Histopathology of pneumonia Atypical Pneumonia Gram Negative Bacteria Silver staining PD-USGov |