T follicular helper (Tfh) cells are a distinct subset of CD4+ T lymphocytes. specialized in B cell help and in regulation of antibody responses. They are required for the generation of germinal center reactions. where selection of high affinity antibody producing B cells and development of memory B cells occur. https://www.roneverhart.com/Castello-di-Amorosa-Il-Barone-Napa-Valley-Cabernet-Sauvignon-2007/