Introduction: Considering the importance of co-culture in differentiation of embryonic stem cells. the aim of this study was evaluation of the effect of co-culturing fetal liver stroma cells with P19 cells on the line of differentiation. Materials and Methods: For this purpose. P19 cells were cultured directly in semisolid medium. https://www.jmannino.com/mega-grab-Cashel-Tail-Bag-top-buy/