A chemical tested in mice, cell cultures and human biopsies has proved highly effective in preventing the growth of tumours.
Scientists have found a way to reverse the devastating effects of multiple sclerosis (MS) in mice.
Mice have been cured of anaemia by an injection of genetically engineered cells that, when injected underneath the skin, formed blood vessels that secreted a hormone called erythropoietin.
Studies of patient tissue and experiments using mice have linked a specific enzyme to both infertility and miscarriage.
Researchers have shown that they can treat sickle-cell anaemia in mice by switching on a haemoglobin gene usually only active before birth.
Watch the 'Of Mice and Men' videos to see how GM mice are used to study human disease.
A common cancer treatment has been shown to be more effective and less toxic when administered at more frequent, lower doses.
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