Fig. 3
From: Form and Function of the skin glands in the Himalayan newt Tylototriton verrucosus
Muscular system of the cutaneous glands of Tylototriton verrucosus. F-actin staining by AlexaFluor-conjugated phalloidin on vibratome sections and confocal laser scanning microscopy. a Overview of the trunk region showing the epidermis on top as well as the smaller mucus glands and the large granular glands type 1 (GG1). b Detail of a GG1 in the parotoid area. The musculature forms a regular basket around the gland with the fibres orientated in parallel perpendicular to the surface of the skin. c Detail of the opening of a GG1. The myoepithelial cells commonly extend as thin fibres towards the gland opening. d Top view of a granular gland type 2 (GG2) of the tail region showing a similar arrangement of cells as in the first type of granular gland. Note the oval areas of the nuclei regularly arranged close to the gland opening. e Detail of the muscular system of a mucus gland in the tail region, top view similar as in (d). The muscular basket of the mucus glands commonly looks less dense than the granular types. Ep, epidermis; Go, gland opening; MG, mucus gland; N, nucleus