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. 2007 Aug 3;73(19):6012–6018. doi: 10.1128/AEM.00589-07

TABLE 5.

Comparison of EC50 values in laboratory medium versus creek water

Chemical Laboratory medium
Creek water
EC50a (M) Limit of detection (M) EC50 (M) Limit of detection (M)
Testosterone (1.7 ± 0.35) × 10−8 2.5 × 10−9 (1.3 ± 0.39) × 10−8 2.5 × 10−9
DHT (1.2 ± 0.97) × 10−8 5.0 × 10−10 (2.0 ± 0.25) × 10−8 5.0 × 10−10
a

EC50 values represent means and standard deviations.