Fig. 3From: Investigation of factors that cause insulin precipitation and/or amyloid formation in insulin formulationsThe effect of physical stimulus in the experiments of simple mixing in the vials. For NovoRapid® (a) and Humulin®R (b), turbidity at 30 rpm (〇) and 850 rpm (●), and fluorescence intensity at 30 rpm (□) and 850 rpm (■) were evaluated. Each value is expressed as the mean ± S.D. (n = 3–5)Back to article page