title: Effect of aging on the excystment of Schizopyrenus russelli and the role of D-amino acids and their mixture in the excystment of S. russelli and Didascalus thorntoni.
mesh_terms: D000596:Amino Acids / Q000494:pharmacology*; D000656:Amoeba / Q000254:growth & development*; D000818:Animals; D013268:Stimulation, Chemical; D013997:Time Factors
chemical_list: D000596:Amino Acids