AbstractsChemistry
A study of the comparative toxicity of the chemical constituents of urone on the eggs and larvae of horse sclerostomes.
| Institution: | McGill University |
|---|---|
| Department: | Deparment of Parisitology. |
| Degree: | MS. |
| Year: | 1948 |
| Keywords: | Parisitology. |
| Record ID: | 1519740 |
| Full text PDF: | http://digitool.library.mcgill.ca/thesisfile124874.pdf |
Abstract
Experiments to test the action of 2£ constituents of urine on the free living stages of horse sclerostomes showed that only five were toxic: urea, ammonia, hippuric acid, benzoic acid and sodium bicarbonate. Benzoic acid was lethal to ail three stages: ova, preinfective larvae and infective larvae, the others being lethal to preinfective larvae only.The time required to kill £0 percent of the preinfective larvae was: urea - $0 hours; ammonia - 31 minutes; hippuricacid - $2 minutes; benzoic acid - 19 minutes; sodium bicarbonate - h3 hours; and of ova and infective larvae was: benzoic acid - 18 minutes and 160 minutes respectively. Ail constituents were used in solution at their approximate concentrations in urine. [...]
