Fig. 6 Histology of teratomas formed by injection of hES cells into SCID mice. Tissues were stained with hematoxylin and eosin. A) Neuron-like cells, from Miz-hES 1 after 44 passages. B) Squamous epithelium-like cells, from Miz-hES 2 after 51 passages. C) Bone-like tissue, from Miz-hES1 after 44 passages. D) Cartilage-like tissue and muscle-like tissue, from Miz-hES1 after 44 passages. E) Immature hepatocyte-like cell, from Miz-hES 3 cells after 36 passages. F) Salivary gland-like cell and pancreatic-like cell from Miz-hES 3 cells after 36 passages. (Scale bars = 100 μm) Establishment and Maintenance of Human Embryonic Stem Cells on STO, a Permanently Growing Cell Line1 Biol Reprod. 2003;69(6):2007-2014. doi:10.1095/biolreprod.103.017467 Biol Reprod | © 2003 by the Society for the Study of Reproduction, Inc. 1