Molecular Characterization and Immunological Approaches Associated with Yellow Grub Trematode (Clinostomid) Infecting Nile Tilapia

Figure 5

Photomicrographs revealed the histopathological alterations to Nile tilapia infected with Clinostomum spp. in the branchial tissue In all tissue sections of (a–d) encysted metacercaria of Clinostomum spp. are presented (arrow) and encircled by massive aggregations of inflammatory cells (arrowhead). Notice muscle hyalinization in (c) section (Thin arrow). (H&E staining (a) (100× magnification, scale bar = 200 μm) (b–d) (400× magnification, scale bar = 50 μm)).