This image was acquired from
wikimedia. It was marked as Public Domain or CC0 and is free to use. To verify, go to the source and check the information there.
Keywords from Image Description:
Legionella Silver Stain. en silver stain of Legionella pneumophila the bacteria that causes Legionellosis Although got this image from commercial website it is clearly labeled as from the CDC This website routinely uses images from which is good thing so no issue should be taken with using an presumably public domain image from