Space flight effects on Paramecium tetraurelia flown aboard Salyut 6 in the Cytos I and Cytos M experiments.
Results of the Cytos M experiment and complementary results of the Cytos I experiment flown aboard the Soviet orbital station Salyut 6 are shown.  Space flight of Paramecia cultures resulted in a stimulating effect on cell proliferation, in a larger cell volume, in changes in cell dry weight, cell total protein and the electrolyte content of the culture media in which the organisms were grown. The assumption of a possible effect of weightlessness on membrane permeability is discussed.
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Laboratoire de Biologie Medicale, Faculte de Medecine, Toulouse, France.
Tixador
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R
Nefedov
Y u
Yu
Gretchko
G
G
Richoilley
G
G
Bassler
R
R
Monrozies
E
E
D000818:Animals; D002455:Cell Division; D003470:Culture Media; D004573:Electrolytes; D016805:Paramecium tetraurelia / Q000166:cytology* / Q000254:growth & development; D015800:Protozoan Proteins; D013026:Space Flight; D014893:Weightlessness
D003470:Culture Media; D004573:Electrolytes; D015800:Protozoan Proteins