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排序方式: 共有268条查询结果,搜索用时 437 毫秒
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Andrew S. Brierley 《Polar Biology》1999,22(2):109-114
The Antarctic euphausiids Euphausia superba and E. crystallorophias were sampled using an 8 m2 rectangular midwater trawl inside the caldera of Deception Island. Specimens of the same species were collected on the same
day from the strandline and sublittoral fringe within the caldera at a bay where these euphausiids had been incapacitated
by high temperature geothermally heated waters. Differences between length frequency distributions of samples obtained by
both methods were investigated once net-caught specimens had been subject to the simulated effects of geothermally heated
waters. Differences between maturity stage/sex ratios for E. superba samples were also assessed. No significant differences between sizes of net-caught or beach-sampled E. crystallorophias were detected, but significant differences were found between both the sizes and sex/maturity stages for E. superba samples. Possible explanations for these differences are discussed.
Accepted: 15 March 1999 相似文献
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Urea as a nitrogen source for thiobacilli. 总被引:2,自引:2,他引:0
267.
G P Brierley D Fleischmen S D Hughes G R Hunter D G McConnell 《Biochimica et biophysica acta》1968,163(1):117-120
268.
Catherine H. Brierley Brian Burchell 《BioEssays : news and reviews in molecular, cellular and developmental biology》1993,15(11):749-754
Human UDP-glucuronosyltransferases (UDPGTs) are a family of enzymes which detoxify many hundreds of compounds by their conjugation to glucuronic acid, rendering them both harmless and more water soluble, hence, excretable. The level of expression of each UDPGT isoform in the body is the result of interplay between temporal, tissue-specific and environmental regulators. This complexity contributes to the difficulty in predicting the metabolic fate of compounds. Genetic defects and polymorphisms affecting individual isoform activities have deleterious and potentially lethal effects, as exemplified by the severe hyperbilirubinaemia observed in Crigler-Najjar Syndrome. Such severe genetic defects in bilirubin glucuronidation are obvious candidates for antenatal screening and gene therapy. 相似文献