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Helminthol."],"published-print":{"date-parts":[[1996,6]]},"abstract":"<jats:title>Abstract<\/jats:title><jats:p>Variability of <jats:italic>Schistosoma intercalatum<\/jats:italic> eggs in shape and size, and their similarity to those of <jats:italic>S. haematobium<\/jats:italic> presented a problem of species identification when egg morphology was the diagnostic criterion used in a study of human schistosomiasis conducted on S\u00e3o Tom\u00e9 and Principe. More than 2500 egg measurements were obtained by light micoscopy to gather data relating to size variability of <jats:italic>S. intercalatum<\/jats:italic> eggs, to evaluate whether factors such as age of host, sex of host and intensity of infection are correlated with variability, and the data were compared with previously published measurements on different isolates and strains of <jats:italic>S. intercalatum:<\/jats:italic> the range in length (104\u2013203 \u03bcm) embraces most of the measurements reported in other studies of <jats:italic>S. intercalatum<\/jats:italic> eggs. There was no correlation either between age and sex of the host, or intensity of infection with variability of egg size. Comparison between measurements of the eggs of <jats:italic>S. haematobium, S. intercalatum<\/jats:italic> and <jats:italic>S. bovis<\/jats:italic> eggs are presented.<\/jats:p>","DOI":"10.1017\/s0022149x00015224","type":"journal-article","created":{"date-parts":[[2009,6,5]],"date-time":"2009-06-05T11:05:14Z","timestamp":1244199914000},"page":"97-102","source":"Crossref","is-referenced-by-count":10,"title":["Morphometric variability of <i>Schistosoma intercalatum<\/i> eggs: a diagnostic dilemma"],"prefix":"10.1017","volume":"70","author":[{"given":"J.","family":"Almeda","sequence":"first","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"C.","family":"Ascaso","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"G. 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