title: A modification of the Falck-Hillarp technique for 5-HT fluorescence employing hypertonic formaldehyde perfusion.
mesh_terms: D000818:Animals; D001923:Brain Chemistry; D002697:Chloral Hydrate; D005453:Fluorescence; D005557:Formaldehyde; D006651:Histocytochemistry / Q000379:methods*; D008297:Male; D009474:Neurons / Q000032:analysis*; D051381:Rats; D012701:Serotonin / Q000032:analysis*
chemical_list: D005557:Formaldehyde; D012701:Serotonin; D002697:Chloral Hydrate