两栖类的孵化酶腺。是由单细胞集合而成。有尾类在前额正中集聚成块，所以亦称为前额腺。
第38天，背腺腺泡明显，腺上皮为复层上皮；
At the 38th day of incubation, dorsal gland vesicles with stratified epithelium were evident.
TRSV 颗粒可以在饲养过程中通过背侧和腹侧下腺分泌物释放到植物中。
TRSV particles can be liberated into the plant during feeding by the dorsal and subventral gland secretions.
膜翅的背腹壁之间也具有内腔和皮细胞，并充满油脂腺（经分析是棕脂肪细胞腺）及其分泌物。
There are cavities in the hymenoptera which are full of the brown fat glands and their secretion.
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