Figure 1

SELDI-TOF analysis of conditioned culture media from (A) F1 blastocysts and (B) media alone on the CM10 protein chip. Chip profile shows m/z 3000-70,000 in both trace and gel views. Protein peaks were detected in the media at m/z values coinciding with the molecular weight of BSA proteins (66, 33, 22 and 13.7kDa). A protein peak of ~8570 (*) was detected in the conditioned culture media (a'), but not in the media only samples (b') which contained no developing embryos.