title: Freeze-fracture studies of gap junctions in the developing and adult amphibian cardiac muscle.
mesh_terms: D000367:Age Factors; D000557:Ambystoma; D000818:Animals; D005614:Freeze Fracturing; D006321:Heart / Q000254:growth & development*; D007365:Intercellular Junctions / Q000648:ultrastructure*; D007814:Larva; D008854:Microscopy, Electron; D009206:Myocardium / Q000648:ultrastructure*; D011893:Rana esculenta; D014981:Xenopus