[Effect of the spatial environment on the mitotic activity, size and protein content of Paramecium tetraurelia]. / Influence de l'environnement spatial sur l'activité mitotique, la taille, et le contenu protéinique de Paramecium tetraurelia.

Cell proliferation, cell volume, protein components of paramecia and chemical analysis of culture medium were studied in Paramecium tetraurelia cultures placed in space environment. The space flight resulted in a marked stimulation of cell proliferation, an increase of cell volume, a decrease of mean protein components and changes of electrolytes in the culture medium.