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Figure 2. Pre-exposure thresholds averaged over the measurements executed 3 and 2 weeks before the commencement of exposure of Control (), Noise alone (), TCE alone () or in TCE and Noise (  ) animals.

Figure 2. Pre-exposure thresholds
averaged over the measurements
executed 3 and 2 weeks before the
commencement of exposure of
Control (), Noise alone (), TCE
alone () or in TCE and Noise (  )
animals.