[A comprehensive multivariate analysis of the correlation among external morphology, chemical constituents and purgative activity of Rheum species].
D000704:Analysis of Variance; D002400:Cathartics; D006801:Humans; D008516:Medicine, Chinese Traditional; D008518:Medicine, East Asian Traditional; D008517:Phytotherapy; D010946:Plants, Medicinal / Q000033:anatomy & histology; D012044:Regression Analysis; D012250:Rheum / Q000032:analysis / Q000033:anatomy & histology
D002400:Cathartics