Fig. 3From: Rationale and design of the Helping Ease Renal failure with Bupi Yishen compared with the Angiotensin II Antagonist Losartan (HERBAAL) trial: a randomized controlled trial in non-diabetes stage 4 chronic kidney diseaseMass spectra of Bupi Yishen formula (ultraviolet; positive ion mode; negative ion mode)Back to article page