text:  SclKO_Flk+Scl-_rep1 SclKO_Flk+Scl- strain that es cell-line is derived from: 129S4/SvJae; original mes cell line: J1; cell-line: SclKO mESC; cell type: ES cell derived day4 EB (embryoid body) Flk1+ mesodermal cells; treatment/cell subtype: EB formation, FACS sorting for Flk1+ mesodermal cells