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Results of qRT-PCR studies in which Hamburger-Hamilton stage 8 explants of pre-lens ectoderm were cultured in basal medium, or exposed to the BMP antagonist Noggin, or a mixture of BMP4 and BMP7. Expression levels relative to Gapdh are shown for Bmp2, 4 and 7 transcripts. The lower graph shows the basal expression levels of each of the BMP transcripts, relative to chicken Gapdh.
