Human tonsil stained with with OriGene Mouse anti MS4A1 (<a href="https://www.origene.com/catalog/antibodies/primary-antibodies/um800009/cd20-ms4a1-mouse-monoclonal-antibody-clone-id-umab58">UM800009</a> diluted 1:600) seen as the blue membrane stain HIER buffer TEE ([B21C-100]) was used 10 minutes pressure cooker. Secondary Polink1 anti-Ms [D18-100], and AP Blue chromogens was mix prior to placing on tissue for 10 minutes.
