| 单词 | median lethal dose |
| 释义 | > as lemmasmedian lethal dose median lethal dose n. the dose of a drug or of ionizing radiation that kills 50 per cent of test subjects; symbol LD50. ΚΠ 1927 J. W. Trevan in Proc. Royal Soc. B. 101 483 Toxicity should be stated primarily in terms of the ‘median lethal dose’, that is the dose which kills 50 per cent. of a large group of animals. 1947 Radiology 49 320/2 The total amount of energy absorbed as beta rays to produce the same effect is given by the product of the median lethal dose in rep times the surface area of the animal..divided by the absorption coefficient of the particular beta emission used. 1994 Vet. & Human Toxicol. 36 295 Twenty-four hour ip median lethal doses (LD50) of freeze-dried aqueous extracts..were determined. < as lemmas |
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