SARS-CoV-2 (COVID-19) Spike RBD antibody [HL257] detects SARS-CoV-2 (COVID-19) Spike protein by immunohistochemical analysis. Sample: Paraffin-embedded Mock (GTX435670) and SARS-CoV-2 (COVID-19) Spike (Omicron BA.4 / BA.5) FFPE 293T Cell Pellet Block (GTX437396). Green: SARS-CoV-2 (COVID-19) Spike RBD stained by SARS-CoV-2 (COVID-19) Spike RBD antibody [HL257] (GTX635692) diluted at 1:1000. Blue: Fluoroshield with DAPI (GTX30920). Antigen Retrieval: Citrate buffer, pH 6.0, 15 min