NGB and breast cancer: The key role played by intracellular NGB in enhancing the resistance of breast cancer cells to taxane chemotherapeutic drugs (i.e., Paclitaxel [9]) prompted us to test the efficacy of NGB extracellular stimulation in inducing pro-survival effects in MCF-7 cells treated with docetaxel (DTX), a cytotoxic taxane commonly preferred in clinical practice [24].