title: Effects of fixation for immunohistochemistry on tissue concentrations of substance P and somatostatin determined by radioimmunoassay.
mesh_terms: D000818:Animals; D005404:Fixatives; D006168:Guinea Pigs; D006651:Histocytochemistry / Q000379:methods; D009197:Myenteric Plexus / Q000032:analysis; D011863:Radioimmunoassay / Q000379:methods; D013004:Somatostatin / Q000032:analysis*; D013194:Staining and Labeling; D013373:Substance P / Q000032:analysis*; D013997:Time Factors
chemical_list: D005404:Fixatives; D013373:Substance P; D013004:Somatostatin