| phylogenetic analyses based on small subunit rrna and glycosomal glyceraldehyde-3-phosphate dehydrogenase genes and ultrastructural characterization of two snake trypanosomes: trypanosoma serpentis n. sp. from pseudoboa nigra and trypanosoma cascavelli from crotalus durissus terrificus. | we sequenced the small subunit (ssu) rrna and glycosomal glyceraldehyde-3-phosphate dehydrogenase (ggapdh) genes of two trypanosomes isolated from the brazilian snakes pseudoboa nigra and crotalus durissus terrificus. trypanosomes were cultured and their morphometrical and ultrastructural features were characterized by light microscopy and scanning and transmission electron microscopy. phylogenetic trees inferred using independent or combined ssu rrna and ggapdh data sets always clustered the sn ... | 2009 | 19883449 |