[Ultrastructural changes in neurons of the arcuate nucleus-median eminence complex in rats irradiated with carbon ions and gamma rays]. / Ul'trastrukturnye izmeneniia neironov kompleksa arkuatnoe iadrosredinnoe vozvyshenie u krys, obluchennykh ionami ugleroda i gamma-izlucheniem.

Ultrastructural changes in the arcuate nucleus and medial eminence area of rats were examined 5 weeks after their exposure to accelerated carbon ions with an energy of 300 MeV/nuclon and 60Co gamma-rays at a dose of 2.0 Gy. In carbon-irradiated animals the ultrastructural changes of arcuate nucleus neurons, their processes and synapses were more significant and diversified than in gamma-irradiated rats.