Stem cells. Landmark paper has an image problem.
Vogel
Gretchen
G
D035843:Biomedical Research / Q000592:standards; D002460:Cell Line; D019976:Cloning, Organism; D033041:Embryo Research; D004622:Embryo, Mammalian / Q000166:cytology*; D006801:Humans; D011643:Publishing; D013234:Stem Cells