NDUFAB1 and neoplasm: ACP-TX-I was cytotoxic to cultured NIH/3T3 (non-tumor fibroblasts) and A549 (human lung carcinoma) cells treated with different concentrations of ACP-TX-I and ACP-TX-II PLA2 (5–500 μg/mL) during a period of 24 h (Figure 7).