Small test injection before CTA was necessary.

CTA前有必要行小剂量试验。

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Each person took the test twice over two days and beforehand received either an injection of ghrelin, a hunger hormone that is released by the stomach, or a shot of saline as a control.

每个人两天里做的测试是多过两次的，并且这些人在参加测试之前都会注射一种胃饥饿素(从胃里释放出的一种饥饿激素)，或者是盐水。

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He blamed the result of the drug test on an anaesthetic injection he had during dental treatment.

BBC: Lunghi grabs Giro win

Then an injection of pace from Arshavin saw him test Hennessey with a stinging shot.

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Nel will be replaced by Dale Steyn or Makhaya Ntini, who has had a cortisone injection in his knee and faces a test to decide if he can rejoin the tour.

BBC: SPORT | Cricket | Nel faces lengthy injury lay-off