MMH-GH5 and PHGH response to toxic inorganic compounds Panel A. Results represent Mean ± SE of hGH levels secreted by PHGH and MMH-GH5 cells after a 5 hour treatment with different concentrations of NaAsO2 (As1: 10-5 M, As2: 5 × 10-4 M, As3: 10-4 M) and CdCl2 (Cd1: 10-5 M, Cd2: 5 × 10-4 M, Cd3: 10-4 M). Panel B. Mean ± SE of viability of PHGH and MMH-GH5 at the indicated treatment conditions as determined by the Trypan blue dye exclusion method. These results were obtained from 6 independent experiments with treatments carried out in triplicate.