Figure 4
Histological sections of a Giemsa-stained ovary of an engorged female infected by R. rickettsii. (A-E) Detail of the oocytes in all development stages with the presence of the bacterium R. rickettsii in the cytoplasm (dotted circle). (B) Detail of the oocyte V with R. rickettsia in its interior. ch, choriun; gv, germinative vesicle; lu, lumen; nu, nucleus; p, pedicel; woc, ovary wall cells; arrow, bacterium R. rickettsia.