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The Harderian gland and glands of the oral angle structure and processes of secretion in the common hamster have been studied under light and electron (scanning and transmission) microscopes. Both these glands were shown to be lipid-producing. Nevertheless, their epithelial cells differ in ultrastructure. The Harderian gland has tubulo-alveolar architecture and consists of two types of epithelial cells. The oral angle gland is acinar and contains differentiating cells of the third type. The possibility of synthesis of various lipids by these three types of cells is discussed.

In the golden hamster the cheek pouch receptory apparatus presented by a peculiar form of complex sensitive terminals has been studied. Every terminal is a combination of several compact bushes overlapping each other. All the bushes are formed with separate myelin fibers. The fibers participating in the formation of the complex receptor can reach 4 in number, but more often there are 2-3 of them. The end-plates of the receptors are polymorphous formations with a maximal transversal section area equal to 0.5-16 mcm. When the bodies are intravitally stained with methylen blue, heterochromity of the end-plates is revealed. The complex receptory formations are supposed to be mechanoreceptors.

The proposed nomenclature of G-banded chromosomes of Phodopus sungorus campbelli is based on requisites and principles of the International System for Human Cytogenetic Nomenclature (ISCN).