>d1deee2 b.1.1.2 (E:2108-2214) Immunoglobulin (constant domains of L and H chains) {Fab of human IgM RF 2A2} rtvaapsvfifppsdeqlksgtasvvcllnnfypreakvqwkvdnalqsgnsqesvteqd skdstyslsstltlskadyekhkvyacevthqglsspvtksfnrgec