31.   The US Justice Department is investigating allegations that FBI scientists working at a crime laboratory tampered with evidence that could affect the outcome of several high-profile cases.

32.   Scientific data is also expected to be called into question as a result of reported sloppiness at the FBI crime laboratory.

33.   The bag and its contents have been sent to the Swedish crime laboratory for analysis, he said.

n. + laboratory >>共 211
research 16.39%
government 5.74%
weapon 5.26%
science 4.90%
police 4.43%
crime 3.95%
drug 3.71%
computer 3.23%
university 2.51%
methamphetamine 1.91%
crime + n. >>共 442
rate 15.50%
scene 14.15%
bill 6.89%
wave 4.70%
victim 3.89%
family 3.37%
statistic 2.37%
prevention 2.26%
syndicate 1.98%
lab 1.70%
laboratory 0.61%
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