half-value period

However, these drugs have got many drawbacks like short half-value period, low fibrin affinity and high bleeding risk. So investigation of new thrombolytic drugs is still very necessary.

然而这些药物普遍存在半衰期短、纤维蛋白亲和力差或出血风险大等缺陷，因此开发新型溶栓药物仍然十分必要。

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The half-life of MTX-ms in vivo was 2.14 times as much as that of MTX solution. During the assay period of sixteen hours the drug concentration of MTX-ms in hepatic vein blood was constantly higher than that of MTX solution.

微球药物消除半衰期为MTX溶液的2.14倍，在16h的体内检测中，肝静脉局部的MTX-ms血药浓度始终高于MTX溶液组。

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60 cases of treatment group taking Jianpi drink orally, and 30 cases of remedial group using BCG polysaccharide and Nucleic Acid Injection, the period of the treatment for both of the two groups is three months, and visit each other half year.

治疗组60例采用自拟方健脾饮口服，对照组30例肌注卡介苗素注射液，均治疗三个月，各随访半年。

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Methods: Iodine-125 seed were inserted into the target tissue and permanent left there for brachytherapy in 28 cases of later period malignant tumors. Charges of patient's condition were observed in 180 days ( Three half-lives).

方法观察28例晚期恶性肿瘤采用碘-125粒子植入治疗180d（3个半衰期）后的病情变化。

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You can start off by thinking about a single subject for five minutes a day, then increase the period daily until you reach a half hour.

开始的时候，你可以每天试着花5分钟，慢慢积累直到半个小时。

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You won't know exactly how they are changing until a few weeks after the retrograde period is over, so in April and the first half of May you will need to watch and wait.

你不会知道它到底会怎样转变，直到几周后它的隐退期结束，所以在四月份和五月的前半月，你需要观测和等待。

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