| http://www.w3.org/ns/prov#value | - If a VEGF variant is only partially soluble in water, it may be prepared as amicroemulsion by formulating it with a nonionic surfactant such as Tween, Pluronics, or PEG, e.g., Tween 80, in an amount of 0.04 0.05% (w/v), to increase its solubility.Optionally other ingredients may be added such as antioxidants, e.g., ascorbic acid; low molecular weight (less than about ten residues) polypeptides, e.
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