Instead, their test tube was filled with some "contaminant": A high molecular weight polymer they would soon identify as the first actin-binding protein, later called filamin A.

另方面，他们的试管充满了“染物”：种他们即鉴别的，相当于第动蛋白结合蛋白的高分子质量的聚合物，后来被称为细丝蛋白A。