Abstract: Differing from conventional lateral flow immunoassay test strips, the present invention provides an immunoassay kit comprising a release strip and a reaction strip. When using this immunoassay kit to complete a competitive-type immunochromatographic test or a sandwich-type immunochromatographic test for a test sample, it needs to firstly put the release strip into the test sample for releasing a specific antibody (or antigen) conjugating with a marker into the test sample, so as to make the first antibody connect to a target object in the test sample; after that, the reaction strip is eventually put into the test sample after the release strip is removed out of the test sample. Therefore, the qualitative analysis result of the competitive/sandwich-type immunochromatographic test can be easily obtained by determining whether the test line shows the color reaction or not.

Abstract: A steering mechanism of a handle-controlled skate board including comprising a front wheel assemblies including two front wheels controlled by the steering mechanism. The steering mechanism is pivotally connected with the top section of a swinging seat by a fixing seat. A driving arm is fixed on rear side of the fixing seat for driving a base bar. The middle portion of the base bar is pivotally connected with the center of the bottom edge of the swinging seat. Two lateral ends of the base bar transversely extend to outer sides of the swinging seat for mounting wheels thereon.