Purkinje Fibers in the Moderator Band. Cross Section.

Higher magnificantion of the Purkinje fibers in cross section. The cytoplasm of the cells used to contain a lot of glycogen. During tissue processing, the glycogen dissolved away and left large pale spaces in the cytoplasm of these modified cardiac muscle cells. Original mag. 50x Masson trichrome. Purkinje fibers. Heart. Circulatory System. Sheep.