61.   The government suspended all federally funded research on human subjects at Johns Hopkins University on Thursday following the death of a healthy volunteer during an asthma experiment.

62.   The technique was repeated with human subjects and showed positive results.

63.   But whether the human subjects gave their consent, and whether they knew what risks were involved if they did, remains unclear.

64.   She also said it was unclear in many cases whether human subjects had given consent for the experiments.