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. 2005 Jan;49(1):230–240. doi: 10.1128/AAC.49.1.230-240.2005

FIG. 4.

FIG. 4.

31P NMR spectra of (A) concentrated WM4368 culture supernatant, (B) the same sample spiked with PTT with a concomitant gain in signal intensity at the same frequency, and (C) the sample shown in B spiked with phosphinothricin, showing the acquisition of a new phosphorus signal.