Haematopoietic and endothelial cells derive from a subset of Flk-1 expressing cells. In vitro differentiation of mouse embryonic stem cells (mESCs) to embryoid bodies (EBs) recapitulate several aspect
H-score = proportion score×intensity score. A total score of 0–12 was calculated and graded as negative (−, score:0), weak (+, score:1–4), moderate (++, score:5–8) or strong (+++, score:9–12).
