While pluripotent embryonic stem cells are limited to the early inner cells within blastocysts, adult stem cells and progenitor cells can be found in a variety of tissues. In humans, well known sources of transplantable stem cells are the bone marrow, blood, and adipose tissue. Multipotent mesenchymal stem cells are typically found in umbilical cord tissue and blood. Neural stem cells have been have been isolated from the brain and spinal cord. Stem cell lines propagated from embryonic stem cells, other adult stem cells, or induced pluripotent stem cell (iPSC) lines are also common sources used in research and regenerative medicine. To help choose the right stem cell product, simply check the desired categories or enter keywords in the search boxes.