5-hydroxytryptamine in the enterochromaffin cells of the guinea pig alimentary tract.
D000818:Animals; D002838:Chromaffin System / Q000032:analysis*; D004064:Digestive System / Q000032:analysis; D005260:Female; D006168:Guinea Pigs; D008856:Microscopy, Fluorescence; D012701:Serotonin / Q000032:analysis*
D012701:Serotonin