31.   Broadly based market indexes showed positive readings.

32.   But at a news conference, Yeung stuck to a positive reading, insisting he did not discern any pre-conditions.

33.   But analysts and government officials warned against too much optimism that the positive reading will continue in months ahead.

34.   Economists had expected a slightly more positive reading.

35.   Following a four-month stretch of negative readings, through July, the index has recorded positive readings over the past three months.

36.   However, officials decided to do a second test Monday after being informed of the positive reading at the World Bank.

37.   In its statement Wednesday announcing the negative follow-up results, World Bank officials defended the approach they took after the initial positive reading on Monday.

38.   Luminol can illuminate traces of blood that have largely been wiped away, but the defense says it can give positive readings on anything from dirt to bananas.

39.   Market measures comprising a wider range of stocks displayed positive readings in the early going.

40.   One concern is that using the BCG in people might lead to falsely positive readings on the skin test now used to detect exposure to tuberculosis, she said.