The goal of our study is to develop nanosensors to detect pre-cancerous changes in the breast and figure out which pre-cancerous breast changes have the highest chance of progressing to become invasive breast cancer. In particular, we are developing targeted nanobiosensors to test real-time protein phosphorylation signaling in live RPFNA cells. In this study, we have designed fiber-optic nanoprobes for optical detection in single living cells. The nanoprobes were fabricated ...