is_specified_output_of has participant physical interaction evidence filter binding assay evidence A type of physical interaction evidence resulting from a mixture of two molecules passed through a nitrocellulose filter, where one may be immobilized on the filter, and if the immobilized molecule is capable of binding to the other, it will be retained on the filter as well. mchibucos SIB:PG 2014-03-16T11:30:54Z ECO:0001046 eco filter paper direct binding assay