Coronavirus genome comparison. (A) A comparison between severe acute respiratory syndrome (SARS) virus (FJ882963) and novel coronavirus (2019-nCoV) (MN908947). (B–C) Comparison of coronavirus 2019-nCoV and two bat coronaviruses (RaTG13 MN996532 and Bat-SLCoVZX21 MG772934). (D) Comparison of 2019-nCoV and pangolin coronavirus (MT040336).