human embryonic stem cell line cell Line H1 cell H1-hESC YH, AD A human ES cell line cell that expresses cell surface markers specific to undifferentiated nonhuman primate ES and human EC cells: : stage-specific embryonic antigen (SSEA)–3, SSEA-4, TRA-l-60, TRA-1- 81, and alkaline phosphatase. It has a normal 46, XY karyotype, O+ blood type. Teratomas are formed upon cell injection into SCID mice. These teratomas include cells from all three germ layers. https://discovery.lifemapsc.com/stem-cell-differentiation/in-vitro-cells/inner-cell-mass-homo-sapiens-line-h1-wa01-wicell-research-institute-inc