sentence: To compare genome sequences of KU27 and KU50 , short , paired-end reads of KU27 and KU50 were mapped onto a reference genome of E. histolytica HM-1 : IMSS using bwasw of bwa ( v 0.6.1 ) [ 73 ] and samtools ( v 0.1.18 ) [ 74 ] at default parameters .