SARS-CoV / SARS-CoV-2 (COVID-19) spike antibody [1A9] detects 6X His-tagged SARS-CoV-2 (COVID-19) spike (S2) protein by immunohistochemical analysis. Sample: Paraffin-embedded SARS-CoV-2 (COVID-19) Spike (S2) FFPE Cell Pellet Block (GTX435644). Green: 6X His-tagged SARS-CoV-2 (COVID-19) spike (S2) protein stained by SARS-CoV / SARS-CoV-2 (COVID-19) spike antibody [1A9] (GTX632604) diluted at 1:1000. Red: 6X His-tagged SARS-CoV-2 (COVID-19) spike (S2) protein stained by 6X His tag antibody (GTX115045) diluted at 1:1000. Blue: Fluoroshield with DAPI (GTX30920). Antigen Retrieval: Citrate buffer, pH 6.0, 15 min