Fixation of the frog's heart for electron microscopy, and the use of sodium ferricyanide as a stain.
D000818:Animals; D001001:Anura; D005292:Ferricyanides; D006651:Histocytochemistry; D006652:Histological Techniques; D006863:Hydrogen-Ion Concentration; D008854:Microscopy, Electron; D009206:Myocardium / Q000166:cytology*; D013194:Staining and Labeling
D005292:Ferricyanides