2003l-793 adultstemcells appareilcardiovasculaire cardiovasculardiseases cardiovascularsystem celldifferentiation cellulessouches cellulessouchesadultes cellulessouchesmultipotentes cultureof cytology diseases embryo embryonicstemcells embryonicstructures embryoresearch heart humanembryo humanexperimentation maladies mammalian methods myocardium organs physiology qs604h91852003 regeneration regenerativemedicine stemcells stemcelltransplantation therapeuticuse therapy transplantation treatment unitedstates