This file is from Wikimedia Commons and may be used by other projects.
The description on its file description page there is shown below.
Summary
DescriptionOH06 Ditch-W 150522 Amoebophilus60.jpg
English: Thallus of Amoebophilus sp. infecting an unidentified amoeba. The sample came from an intermittent stream/drainage ditch in Coventry Township, Summit County, Ohio, USA. Image has been manipulated in GIMP: cropped, contrast increased 50, brightness decreased 30, sharpen filter of 0.9.
to share – to copy, distribute and transmit the work
to remix – to adapt the work
Under the following conditions:
attribution – You must give appropriate credit, provide a link to the license, and indicate if changes were made. You may do so in any reasonable manner, but not in any way that suggests the licensor endorses you or your use.
share alike – If you remix, transform, or build upon the material, you must distribute your contributions under the same or compatible license as the original.