TIE and TEK expression on hematopoietic cells. (A) The expression of TIE and TEK on c-Kit⁺ cells. Both TIE and TEK was expressed on a subset of c-Kit^high cells. (B) The expression of TIE and TEK on c-Kit⁺ cells of E14.5 fetal liver cells. TEK was expressed on a subset of c-Kit^high cells, whereas TIE was on c-Kit^low cells. (C) The expression of TIE and TEK on a subset of B220⁺ IgM⁺ mature B cells of the spleen.