The researchers managed to immobilize the pollen protein on the wall of the test tube, first inject antibodies (IgG4) to bind it to the pollen protein; wash away excess IgG4, then add mite protein labeled with radioactive iodine, and finally rinse with water. The radiolabeled mite protein was found to stick to the wall of the test tube, meaning that the antibody bound two different antigens. Does the following statement meet the above meaning? ['Pollen protein is fixed on the wall of the test tube, which helps stabilize its binding to IgG4.', '"Excess IgG4" refers to IgG4 that does not bind to pollen protein after being injected into a test tube.', 'The second rinse is to remove excess mite protein and excess IgG4 antibodies.', 'Radioactive iodine is added to the mite protein to accelerate its binding to the antibody IgG4.']