Cells which have been directly reprogrammed to cell types of limited differentiative potential (for example, the generation of neural stem cells from skin fibroblasts without first reverting to apluripotent iPSC state), while they cannot be considered iPSCs, also fall within the scope of these guidelines. 一方、人工的に限定された分化能を誘導されたヒト幹細胞(例えば、皮膚の線維芽細胞からiPS細胞を経ずに直接作製された神経幹細胞等)はiPS細胞とは呼ばないが、この指針に含まれる。 - 厚生労働省