[The lipid phase of biomembranes and level of compensatory reserve of the cell energy system in animals irradiated in hypokinesic states].

A combined exposure to hypokinesia (21 days) and gamma-radiation (8 Gy) was shown to produce a synergistic effect on the level of endogenous radiosensitizers in mitochondria resulting in a low-energy shift: the compensatory reserve of the hepatocytes' energy system was utilized with a 242 per cent efficiency. The molar cholesterol/phospholipid ratio decreased. The lipid phase homeoviscosity increased significantly in microsomes.