Abstract
Summary
1. A continuously recording counter adapted to the scanning of radio chromatograms has been described. 2. This method has been applied to a chromatographic method of demonstrating and measuring the reaction between radioactive iodine labelled bovine serum albumin and its antiserum. 3. Preliminary experiments have shown a reasonable agreement between the zone of maximum antigen fixation obtained by a chromatographic method and the zone of maximum precipitation obtained by the precipitin method. 4. The method appears to have useful possibilities in characterizing soluble antigen-antibody complexes as well as other protein-protein interactions. 5. It has been demonstrated that normal sera have the property of permitting a homogeneous movement of the labelled bovine serum albumin whereas the buffered solutions thus far tried have resulted in streaking of the albumin.
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