Figure 12
From: Ultrastructural analysis of development of myocardium in calreticulin-deficient mice
Ultrastructure of intercalated discs of the developing ventricular myocardium. Initially, the immature intercalated discs are short and thin (A, B). With embryonic development, they become larger, more complex and are accompanied by increasing inter-digitations (C, D). Additional details are in the text. Magnification 16,000×.