We subscribe to the HONcode principles of the Health On the Net Foundation. Susan, we now know that breast cancer is not all alike and can vary, for example, by tumor type.
Cells have life cycles, much like humans do.
And there are certain times in their life cycles that they do specific jobs. That synthetic phase is called the S-phase. It's where a lot of nuclear activity predominates in a cell. Maybe you can have a drug that will just aim at the nucleus. Or maybe you could make a drug that aims at the cytoplasm.