title: Basic studies on Hirudo medicinalis for a space experiment. I. Behavior of Hirudo medicinalis in natural environment.
mesh_terms: D000222:Adaptation, Physiological; D000818:Animals; D001274:Atmospheric Pressure; D002245:Carbon Dioxide; D002940:Circadian Rhythm; D003352:Corynebacterium; D007865:Leeches / Q000378:metabolism / Q000502:physiology*; D008027:Light; D009068:Movement; D010101:Oxygen Consumption; D011549:Pseudomonas; D012287:Rickettsiaceae; D013026:Space Flight; D013045:Species Specificity; D013242:Sterilization; D013696:Temperature
chemical_list: D002245:Carbon Dioxide