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Representative images of ROSA26 knock-in chimeras and progeny generated using JM8A3 ES cells. A) An ~50% coat color contribution chimera. B) An ~90% coat color contribution chimera. C) A representative white-eyed (white arrow), C57BL/6-Tyrc-Brd albino blastocyst-derived pup, and a representative black-eyed (black arrow), C57BL/6N JM8A3-derived pup.
