Methods and cell culture medium for the generation of human pluripotent
embryonic stem cells are disclosed. Human embryonic stem cells are
cultured with human granulosa feeder cells, muscle cells, Fallopian
ductal epithelial cells, bone marrow stromal cells, and skin fibroblasts
and the embryonic stem cells maintain their pluripotent phenotype. The
human pluripotent embryonic stem cells can be cultured without feeder
cells, and in the presence of supplemental growth factors. The human
pluripotent embryonic stem cells can be alternatively cultured with
conditioned medium obtained from a cell culture capable of maintaining
human embryonic stem cells in a pluripotent state, wherein the cell
culture is a human granulosa cell culture.