title: [Biological effects of weightlessness at the cellular level. Comparative study of cultures of Paramecia aboard the orbital station Salyut-6 and a stratospheric balloon].
abstract: In order to distinguish the effects of cosmic rays from those of weightlessness at the cellular level, we performed experiments aboard stratospheric balloon, where gravity is equal to 1 g and cosmic radiation roughly equal to that aboard Salyut-6. The results suggest that the stimulation of cell proliferation is probably due to cosmic rays, metabolic changes being related to microgravity.
mesh_terms: D002118:Calcium / Q000378:metabolism; D002455:Cell Division; D005118:Extraterrestrial Environment; D007424:Intracellular Fluid / Q000378:metabolism; D010247:Paramecium / Q000378:metabolism*; D011506:Proteins / Q000378:metabolism; D013026:Space Flight; D014893:Weightlessness
chemical_list: D011506:Proteins; D002118:Calcium
vernacular_title: Effets biologiques de l'impesanteur à l'échelon cellulaire. Etude comparative de cultures de paramécies à bord de la station orbitale Saliout-6 et d'un ballon stratosphérique.