Ehrlichia are intracellular gram negative bacteria that canbe transmitted by ticks to humans from dogs, deer, or horses.The organisms appear as a clusterlike inclusion (or morula;see arrow) within vacuoles of the host granulocytes.
The above image was first published in the ASH IMAGE BANK, a reference and teaching tool that is continually updated with new atlas images and images of case studies.
For more information or to contribute to the Image Bank, visit
ashimagebank.hematologylibrary.org.
Peter Maslak and Lisa Southern, Memorial Sloan-Kettering Cancer Center
