title: Doubt cast over tiny stem cells.
authors.forename: Alison
authors.initials: A
authors.lastname: Abbott
mesh_terms: D000818:Animals; D002469:Cell Separation; D048429:Cell Size; D004622:Embryo, Mammalian / Q000166:cytology; D006801:Humans; D051379:Mice; D015203:Reproducibility of Results; D033581:Stem Cell Transplantation; D013234:Stem Cells / Q000166:cytology*; D035501:Uncertainty