[RETRACTED ARTICLE] Derivation of new Brazilian lineages of human embryonic stem cells under physiological oxygen conditions

A. O. Georges, J.Vergani, N.M. Fraga, A.A. S. Fonseca, S.S. Fujihara, L.C. R. M. Albuquerque, M.J. G. Castro, F.S. Silva, I.V. Pereira, L.