Two new studies came out that I found rather interesting. The ability to transfer into humans is years off but the progress is still impressive. First up, a team at the University of Toronto developed a new technique to expand stem cells at industrial capacity. Second, Children’s Hospital of Philadelphia generated a new human stem cell type called an “endodermal precursor”. If the new stem cell technique can also be used to generate ectodermal precursors, it could be a major advancement in regenerative therapy for ALS. Many additional steps would still be necessary but mass-production of teratoma-free cells would be an important contribution.