“…Although the agar plating of Leishmania promastigotes has been described previously (Keppel and Janovy, 1980;Iovannisci and Ullman, 1983), it has mainly been used to enumerate, not decontaminate, parasites in clinical samples (Hill, 1983;Hill and Fahey, 1987). With trypanosomes (Podlipaev and Naumov, 2000) and Blastocystis hominis (Tan et al, 2000), agar plating has been used to differentiate species or strains.…”