New research has led to hopes that breast cancer may be cured.
A cancer therapy using nanotechnology has been found to cure terminal breast cancer in tests that were carried out on mice.
The treatment is based on supplying drugs to important organs without going through the cell defences which are resistant to the therapy.
The recent tests found that half of the mice no longer had breast cancer for at least eight months, which would equate to 24 human years.
There is hope that clinical trials on humans could start as early as 2017, according to Mauro Ferrari, who is President of the Houston Methodist Research Institute in Texas.
Before this research had been announced, there were also celebrations over another new breast cancer therapy that had destroyed the tumours in only 11 days. Both new therapies have been seen as a breakthrough in breast cancer treatment.