Figure 3 of Biswas, Mol Vis 2009; 15:1492-1508.


Figure 3. Gap junctions in the inner mature cortical fibers (400-800 μm from the surface) showing several transitional stages of the structural remodeling of gap junctions. A: In the more superficial regions, small clusters of crystalline-packed connexons (arrows) are seen mixed with other loosely-packed connexons (opened arrows). B: A number of crystalline-packed connexons (arrows) are often aligned into parallel rows within the otherwise loosely-packed (opened arrows) gap junction. C: Another example of a gap junction containing a mixture of crystalline-arranged (arrows) and loosely-packed (opened arrows) connexons in which the crystalline-packed configuration is the major form. In the deeper cortical regions, most connexons are primarily in the tightly- or crystalline-packed arrangements (arrows) in both large (D) and small (E) gap junctions. In the images, pf indicates the P face of membrane and ef indicates the E face of the membrane. The scale bars indicate 200 nm.