849 query 844:DFVRLKQQISD: 854 sp|P40189|IL6RB_HUMAN[1] 844:DFVRLKQQISD: 854 sp|P40190|IL6RB_RAT[1] 843:DFVRLKQQVSD: 854 sp|Q00560|IL6RB_MOUSE[1] 842:DFVRLKQQVSD: 853