title: Effect of serotonin and endotoxin on acute gastric stress ulceration in conventional and germ-free rats.
mesh_terms: D000818:Animals; D004731:Endotoxins / Q000009:adverse effects*; D005856:Germ-Free Life; D006801:Humans; D007103:Immobilization; D051381:Rats; D012701:Serotonin / Q000009:adverse effects*; D013315:Stress, Psychological; D014456:Ulcer / Q000209:etiology*
chemical_list: D004731:Endotoxins; D012701:Serotonin