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6196045 
Journal Article 
Specific gravity of Opisthorchis viverrini eggs 
Harnnoi, T; Wijit, A; Morakote, N; Pipitgool, V; Maleewong, W 
1998 
Yes 
Journal of Helminthology
ISSN: 0022-149X
EISSN: 1475-2697 
72 
4 
359-361 
English 
9858635 
WOS:000077881300016 
The specific gravity of the eggs of the liver fluke Opisthorchisviverrini was determined using a sucrose gradient centrifugation and found to range from 1.2713 to 1.3043. The peak egg count was located at the sucrose fraction with a specific gravity of 1.2814. An attempt to float eggs in saturated sodium nitrate solution, sp.gr. 1.4, failed. Examination of human stool specimens for Oviverrini eggs by simple flotation in saturated sodium nitrate solution and the formol-ether sedimentation technique revealed that the flotation technique was not as efficient as the sedimentation technique. It was suggested that the flotation techniques were inappropriate for the detection of Oviverrini eggs in faeces or contaminated soil. 
IRIS
• Nitrate/Nitrite
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