| high-resolution electron microscopic evidence for the filamentous structure of the cyst wall in giardia muris and giardia duodenalis. | high-resolution morphological studies of the cyst wall of giardia spp. were performed using low-voltage scanning electron microscopy (lvsem) and transmission electron microscopy (tem). the cyst wall was composed of membranous and filamentous layers. the membranous layer consisted of an inner and an outer cyst membrane separated by a thin layer of cytoplasm. the filamentous layer contained individual filaments that ranged from 7 to 20 nm in diameter when measured by lvsem, formed a dense meshwork ... | 1989 | 2795382 |
| sem evidence for a new species, giardia psittaci. | the genus giardia has been subdivided by filice (1952) into 3 species, g. agilis, g. muris, and g. duodenalis, based on the morphology of the median body and subtle variations in the dimensions of trophozoites. giardia trophozoites were isolated from the small intestine of budgerigars (parakeets) and examined morphologically with light and scanning electron microscopy. these trophozoites, like other giardia spp., possessed a flattened dorso-ventral shape, 8 flagella, and an adhesive disc on the ... | 1987 | 3598809 |
| zoonotic diseases: health aspects of canadian geese. | review zoonotic diseases associated with canadian geese. | 2001 | 11768449 |
| molecular characterization of giardia psittaci by multilocus sequence analysis. | multilocus sequence analyses targeting small subunit ribosomal dna (ssu rdna), elongation factor 1 alpha (ef1α), glutamate dehydrogenase (gdh), and beta giardin (β-giardin) were performed on giardia psittaci isolates from three budgerigars (melopsittacus undulates) and four barred parakeets (bolborhynchus lineola) kept in individual households or imported from overseas. nucleotide differences and phylogenetic analyses at four loci indicate the distinction of g. psittaci from the other known giar ... | 2012 | 22921500 |