Figure 12From: Ultrastructural analysis of development of myocardium in calreticulin-deficient miceUltrastructure 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×.Back to article page