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DsRed iPS cells obtained from 1 week frozen tail (FT) and 1 month frozen fibroblasts (FF) were taken for blastocyst injection. a iPS clones expanded in standard ES cell medium were predominantlyeuploid. b These iPS cells were able to generate chimeric pups with red fluorescent protein (RED) expression. c The chimeras with high chimerism and RED expression were taken for germline testing
