One of these molecules is chemically linked to a cytotoxic payload in an ADC, a form of targeted cancer therapy. HAT medium is used to incubate hybridomas in a technique for producing large amounts of one type of these molecules. (10[2])These molecules’ hinge regions connect their Fab (“F-A-B”) and Fc (“F-C”) regions. (10[1])The diversity of certain receptors and these molecules is facilitated through V(D)J (10[1])recombination. A type of these proteins that only recognizes a single target is called (10[1])“monoclonal.” (-5[1])These proteins can (10[1])class-switch between their five isotypes and consist of two heavy chains and two light chains. For 10 points, B cells produce what Y-shaped proteins that bind to antigens? ■END■ (10[2]0[2])