Forsyth N, Musio A, Vezzoni P, Simpson A, Noble B, McWhir J. Physiologic oxygen enhances human embryonic stem cell clonal recovery and reduces chromosomal abnormalities. Cloning Stem Cells. 2006;8:16-23 pubmed
..These results clearly demonstrate that physiologic oxygen culture conditions are indispensable for robust hES clone recovery and may enhance the isolation of novel hES lines and transgenic clones. ..