Abstract
To classify 21 new isolates of Trypanosoma cruzi (T. cruzi) according to the Discrete Typing Unit (DTU) which they belong to, as well as tune up a new pair of primers designed to detect the parasite in biological samples. Strains were isolated, DNA extracted, and classified by using three Polymerase Chain Reactions (PCR). Subsequently this DNA was used along with other isolates of various biological samples, for a new PCR using primers designed. Finally, the amplified fragments were sequenced. It was observed the predominance of DTU I in Colombia, as well as the specificity of our primers for detection of T. cruzi, while no band was obtained when other species were used. This work reveals the genetic variability of 21 new isolates of T. cruzi in Colombia.Our primers confirmed their specificity for detecting the presence of T. cruzi.
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