Figure 1.
X-ray powder diffraction (XRPD) diffractograms of (a) crystalline (C) lysine (LYS), histidine (HIS), arginine (ARG), and indomethacin (IND). (b) Mixtures of IND–LYS, IND–HIS, and IND–ARG prepared by ball-milling (BM) for 60 min.
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