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Functional analysis for the clone containing dioxygenase gene. The HPLC chromatogram (254 nm) from the extracts of clone My6-pBK-CMV is shown with the negative-ion mass spectra of the two products (inset) with retention times of 20.84 (top) and 17.77 min (bottom). These products were not observed in negative control pBK-CMV.
