TY JOUR TI Protection of Spermatogenesis with β-Carothin in Radiation Exposure. Message 2: Carotenoid Enrichment of Diet with Single Acute External γ-Irradiation KW external acute γ-irradiation KW rats KW spermatogenesis KW β-carotene KW introduction to JO Medical Radiology and radiation safety AU Belyaev, I.. PY 2019 IS 64 PB Federal Medical Biological Agency of Russia