Assertion: alkaloid's activity | /r/HasProperty | et al.
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text: In an attempt to find other AChEIs of plant origin, twenty-three Amaryllidaceae alkaloids and twenty-six methanol extracts of different wild Narcissus plant species have been tested for their AChE inhibitory activity (Ingkaninan et al., 2000; Rhee et al., 2001; Marston et al., 2002).