Blood smear images from our office lab.
This Giemsa blood smear shows typical Bartonella-like bacteria. These are seen as small dots which color blue at the edges or just inside the red blood cells. These are larger than a Bartonella-like organism shown below in a different images. There are many species of Bartonella-like bacteria of differing sizes. These smears are an adjunct in the diagnosis of patients with tick borne illness. We are not able to speciate, (indicate a specific species) and antibody tests and PCR DNA tests are negative. We call these bacteria Bartonella-like but they really fall within the realm of mystery bugs.