Figure 5.

Electron micrographs illustrate [A] section of digestive g. of control snail, Monacha cartusiana (Mǜller). It was noticed that completed microvilli (MV) with regular tubules, extensively distributed mitochondria (M), Golgi bodies (G), smooth endoplasmic reticulum (SER) and execratory cells (EXC) (head arrow); [B] section in digestive gland of ZnONPs-treated snail, H. aspersa for 14 d. It was noticed disturbed brush border of microvilli (MV), lack of mitochondria (M), irregular nuclear membrane (head arrow), nucleus (N), irregular execratory gland (EXG), and execratory vacuoles (EXV), and [C] section in digestive glands of recovered snail for 14 d after treatment with ZnONPs for the same period. It was noticed recovered regular brush border of microvilli (MV), mitochondria (M), digestive cells (DC) (head arrow), execratory gland (EXG), execratory vacuoles (EXV), smooth endoplasmic reticulum (SER), and Golgi bodies (G) [Glutaraldehyde-OsO₄ fixed uranyl acetate lead citrate-stained preparation 4000X].