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Results of a culture of bPGCs/gPGCs subjected to G418 selection 7 days later (a, b) and few positive EGFP bPGCs/gPGCs remain after 14 days (c, d) post-transfection with the pEGFP-N1 vector. EGFP protein-expressing cells were observed on the different surfaces of the specimens (40× magnification)
