Many, but not all, of the human ES cell lines available through the WiCell Stem Cell Bank are eligible for use in federally funded research in the U.S. Please see the NIH Approved Collection for a complete list of NIH-approved human ES cell lines available from the WiCell Stem Cell Bank. Please see grants.nih.gov/stem_cells/registry/current.htm for a current list of stem cell lines eligible for NIH funding. The NIH does not evaluate iPS cells for approval for research funding.