| phylogenetic analysis of the genus cylicocyclus (nematoda: strongylidae) based on nuclear ribosomal sequence data. | seven species of cylicocyclus ihle, 1922 (nematoda: strongylidae) were collected from donkeys from henan province, china. five samples of each species were selected for sequencing. sixteen different internal transcribed spacer (its) sequences representing the seven species of cylicocyclus were obtained. sequence differences in the first internal transcribed spacer (its-1) among species was lower than that of the second internal transcribed spacer (its-2). phylogenetic analyses were conducted usi ... | 2013 | 23666651 |