DIA-UP full-series TSA multiplex fluorescent IHC reagents include ready-to-use kits in 4-color, 5-color, 6-color and 7-color formats, fully supported by matching raw materials: HRP-conjugated secondary antibodies, TSA reaction buffer, blocking buffer, antibody wash buffer and antigen retrieval buffer. Powered by Tyramide Signal Amplification (TSA), our system breaks the species restriction of conventional immunofluorescence assays. Co-staining of multiple targets can be achieved using primary antibodies derived from the same host species. A single tissue section enables simultaneous visualization of up to 7 biomarkers. The technology delivers efficient detection of low-abundance targets, cuts primary antibody consumption and simplifies staining workflows. It is compatible with paraffin and frozen tissue sections, with flexible kit combinations available for customized experimental needs. Multiple packaging formats are supplied to meet varied testing throughput requirements of diverse research projects.