Research Article

Study of the Effect of Mercury Salt on the Presence of Annelida (Lumbricus terrestris) in Soil and the Histological Changes on the Skin Tissue

Figure 2

A longitudinal section in the body wall of worms exposed to a concentration of 10 ppm in which the cell boundaries are shrunken and indistinctly defined by the epidermal epithelial tissue (H and E) stain magnification 650.