<i >Wolbachia pipientis</i> in <i >Dirofilaria immitis</i>, photomicrograph

Wolbachia pipientis in Dirofilaria immitis, photomicrograph

Cross-section of an adult female Dirofilaria immitis stained with a polyclonal antibody against the Wolbachia surface protein. Wolbachia bacteria are identified within the lateral chords by red-staining antigens on the surface of the organisms. Original magnification, 40X.

Courtesy of Dr. Laura Kramer.