RNAscope™ 2.5 HD Detection Reagents-RED assay are designed for RNA in situ hybridization (ISH) based on ACD's patented signal amplification and background suppression technology. This manual assay is a single-plex, chromogenic-RED assay. The detection reagents contains AMP 1, APM2, AMP 3, AMP 4, AMP 5, AMP 6, Fast RED-A, Fast RED-B.