FIG. 4.

Detergent-induced toxicity in different human cell lines. Viability of HBE, CBF, HLF, and hMSC in response to various amounts of different detergents (SDC, SDS, and Triton X-100) was determined by WST-1 conversion after cultivation for 24 h. 2.5% Triton X-100 served as positive (cytotoxic) control while cultivation medium served as negative control (set to 100%). 70% viability and thereby critical, cytotoxic concentrations are displayed in Table 3. Mean ± SD, samples measured in triplicates. HBE, Human bronchial epithelial; HLF, human lung fibroblasts; hMSC, human mesenchymal stem cell. Color images available online at www.liebertpub.com/tec