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The yields of Diol, DHT and 4-androstenedione (4-A) are shown for the control ( C ) and in response to testing agents. Means values from 6 human gingival fibroblast (HGF) cell-line incubations are shown, for the substrate 14C-testosterone. N = 250 μg/ml; G1-4: 1–4 μg/ml.
