From the case:
Adult deer tick
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Photo of the adult deer tick (ixodes scapularis), the vector for Lyme disease.
Photo by Scott Bauer. See case discussion for full attribution.
Case Discussion
Attribution
Author: Photo by Scott Bauer.
Modification: square crop
Original file: https://en.m.wikipedia.org/wiki/File:Adult_deer_tick.jpg
License: This image is in the public domain because it contains materials that originally came from the Agricultural Research Service, the research agency of the United States Department of Agriculture.