Abstract
The parathyroid gland of n e wts, Triturus pyrrhogaster (Boié), in the spring season was electron-microscopically studied, and compared with that in natural hibernation observed previously.
The parenchyma consisted of “basal c e lls” and “suprabasal cells”. In the latter, mitochondria, granular endoplasmic reticula, small dense granules with a loose fitting membrane, round homogeneously dense bodies, and vacuolar bodies (multivesicular b o dies)seemed to be increased in number and Golgi apparatus were somewhat enlarged, while glycogen granules and heterogeneously d ense masses (lipofuscin pigment-like bodies) appeared decreased in num b er, when contrasted to those under natural hibernation.
Such alterations of cell organelles an d inclusion bodies in frequency are thought to be an indication of active cellular functio n. In addition, mutual correlations of these inclusion bodies w e re discussed.
