Screening of Stool samples by PCR. (A) Schematic representation of location of Entamoeba histolytica specific primer. BH16197 is Genbank accession number of Entamoeba histolytica SINE-2 (EhSINE2) element; (B) Schematic representation of location of Entamoeba dispar specific primer from rDNA molecule. 18 S, 5.8 S and 28 S are corresponding ribosomal gene sequences and ITS-1 and ITS-2 refers to internal transcribed spacer 1 and 2; (C) Detection of E. histolytica in stool DNA sample using E. histolytica specific primers, Lane 1 = Marker 100 bp, Lane 2 = EhHM1 genomic DNA as positive control, Lane 3 & 4 stool sample DNA, Lane 5 = Genomic DNA of E. dispar SAW760 as negative control. Sample in lane 4 is E. histolytica positive; (D) Detection of E. dispar in Stool sample using E. dispar specific primers. Lane 1 = Marker 1 kb, Lane 2,3,4 and 5 stool sample DNA, Lane 6 = Genomic DNA of E. dispar as positive control. Sample in Lane 3 and 5 are E. dispar positive. Lane 4 stool sample is E. histolytica positive and was used as negative control.