| detection by pcr of pathogenic protozoa in raw and drinkable water samples in colombia. | we evaluated the presence of dna of giardia, toxoplasma, and cryptosporidium by pcr, and of giardia and cryptosporidium genera by immunofluorescence antibody test (ifat), in water samples, before, during, and after plant treatment for drinkable water. we applied this method in 38 samples of 10 l of water taken from each of the water treatment steps and in 8 samples taken at home (only for toxoplasma pcr) in quindio region in colombia. there were 8 positive samples for cryptosporidium parvum (21 ... | 2016 | 26779921 |