Figure 6 in A novel epidermal gland type in lizards (α-gland): structural organization, histochemistry, protein profile and phylogenetic origins

Figure 6. Transmission electron microscopy of the epithelium from the femoral area of Tropidurus catalanensis. A, general view of the glandular epithelium showing major skin layers and abundance of vesicles inside glandular cells. B–G, magnified view of glandular tissue showing: B, clusters of melanin granules and numerous vesicles; C, aggregations of four different types of vesicles (V1, V2, V3 and V4); D, E, Golgi apparatuses amid secretory vesicles; F, autophagocytic events (arrowheads indicate membrane projections); G, iridophores present in the apical portion of the dermis. Legend: Go, Golgi complex; Ir, iridophore; Me, melanin granule; Nu, nucleus; V1, vesicles type 1; V2, vesicles type 2; V3, vesicles type 3; V4, vesicles type 4.