Hypermethylation of CD19 promoter enables antigen-negative escape to CART-19 in vivo and in vitro ================================================================================================= * Aneta Ledererova * Lenka Dostalova * Veronika Kozlova * Helena Peschelova * Adriana Ladungova * Martin Culen * Tomas Loja * Jan Verner * Sarka Pospisilova * Michal Smida * Veronika Mancikova