SEM, TEM, and IHC Analysis of the Sinus Node and Its Implications for the Cardiac Conduction System
Figure 2
SN architecture. (a) Sections longitudinal to the SN artery; it is easy to appreciate the inside structure of the cage and the knots at its vertices (SEM ×1250) (Sl: fibroblast-like cell, WK: elastic cage knot). (b) Sections throughout the artery plane showing cages as vortices (Cap: capillary vessel, Cw: cage wall; HE ×600).
