| frequency of enteric protozoan parasites among patients with gastrointestinal complaints in medical centers of zahedan, iran. | we investigated the prevalence of intestinal protozoan parasites in patients with gastrointestinal complaints in medical centers in zahedan, iran. a total of 1562 stool samples was examined from july 2004 to january 2006 using microscopy (direct smear, formalin-ether concentration), xenic culture and pcr techniques. four hundred and twenty-seven (27.3%) of the patients were infected with one or more intestinal parasites. giardia lamblia (10.1%), entamoeba coli (10%), e. hartmanni (1.7%), blastoc ... | 2009 | 19084249 |