Fig. 4From: Histological and scanning electron microscopic study of the effect of UV-A radiation on the land snail Monacha obstructaA, B Scanning electron microscope of the foot of Monacha obstructa showing A unexposed snails; the foot sole (left) with many narrow grooves (ng), and the sides (right) with many wide grooves (wg). B Snails exposed to UV-A for 3 h for 2 days; the grooves became wider (g), and many pores appeared (p)Back to article page