蛋白纯化琼脂糖填料Ni-NTA Agarose Resin 6FF Prepacked column for His Fusion Protein Purification (His标签融合蛋白纯化中压层析预装柱，适用于AKTA) 蛋白纯化琼脂糖填料-北京博迈斯科技发展有限公司