title: Letter: Double heart formation in DC serum.
mesh_terms: D000818:Animals; D002454:Cell Differentiation; D003470:Culture Media; D004622:Embryo, Mammalian / Q000166:cytology*; D006321:Heart / Q000196:embryology; D066298:In Vitro Techniques; D008394:Marsupialia; D051381:Rats
chemical_list: D003470:Culture Media