In addition, the addition of surfactant favored the reduced dosage of relatively expensive polyethylene glycol (PEG 400), and the cost of liquefaction could thus be reduced.

另外，表面活性剂的存在还能减少价格较贵的聚乙二醇400的用量，因此降低了液化的成本。

youdao

Dr Margherita Cantornas, who led the study at Penn State University in the US, said that the anti-inflammatory properties of vitamin D could allow the dosage of steroids to be reduced, cutting the side effects.

BBC: Bowel disease linked to vitamin