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Fig. 4 | Parasites & Vectors

Fig. 4

From: Ultrastructure and localization of Neorickettsia in adult digenean trematodes provides novel insights into helminth-endobacteria interaction

Fig. 4

Neorickettsia in reproductive tissue of adult P. elegans (HPF/FS). a Cross-section through the vas efferens, note the endobacteria (arrows) in the inner tissue of the vas efferens. b Overview of a cross-section through an intrauterine egg showing the zygote (arrowhead) and the vitelline syncytium. Single endobacteria (arrows) are localized in the vitelline tissue. c Magnification from b showing the membranes (arrowhead) of an endobacterium. d Another magnification from b showing a few endobacteria (arrows) in close proximity of the vitelline material. e Small cluster of endobacteria in an intrauterine egg. f Magnification of the boxed area in e showing a large endobacteria in a vacuole (arrow) and two typical large Ehrlichia-like morulae (arrowheads) with many small reticulate cells. These typical morula stage Neorickettsia were observed only in developing eggs. Abbreviations: es, egg shell; l, lipid droplet; m, mitochondrion; n, nucleus; vc, vitelline cell. Scale-bars: a, b, e, 2 μm; c, d, 100 nm; f, 500 nm

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