Clustal-W alignment of microsporidian small subunit rRNA sequences. The ssu rRNA sequence of Enterocytozoon hepatopenaei from P. monodon (Pm-Entero)(Genbank accession no. KF362129) and the microsporidian from P. vannamei (Pv-Entero) (Genbank accession no. KF362130) are compared with the matching region of the ssu rRNA gene of E. bieneusi (GenBank AY257180). Regions of 100% identity between Pv-Entero and Pm-Entero are outlined in grey background while 100% identity among all three species is indicated by asterisks.