title: Embryonic myocardial cell aggregates: volume and pulsation rate.
mesh_terms: D000818:Animals; D002449:Cell Aggregation; D002642:Chick Embryo; D004058:Diffusion; D006321:Heart / Q000196:embryology*; D006325:Heart Atria / Q000196:embryology; D006352:Heart Ventricles / Q000196:embryology; D008854:Microscopy, Electron; D009206:Myocardium / Q000166:cytology*