The clonal human embryonic progenitor line SK11 was derived from the registered parental hES cell line H9. It expresses chondrogenic (COL1A1, VCAN, SOX9, COL6A1) and osteogenic markers (RUNX2, ALPL, SPP1). In addition, it expresses markers of axial and appendicular level-derived mesenchymal cells (SIX1, TWIST1, SNAI2).