Abstract

Cytotoxicity of urine (n=29), soil and snow (n=13) using bull spermatozoa short-term suspension culture and analyzer AT-5 was studied. For each sample, 3 to 4 repeated series of tests were carried out with new test and control solutions as well as with newly defrosted bull spermatozoa suspension. To assess reproducibility of results, a variation factor for the index of toxicity (It) was determined. It is shown that It is highly variable. Repeated series of tests allow to lower probability of error in the research.

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