Thanks to our Hertfordshire correspondent Lilian Robb
The British Heart Foundation is to begin a major new research programme to find a cure for heart failure, a condition affecting 750,000 UK people.
This disease of the heart muscle, often caused by a heart attack, is one of the UK’s leading causes of disability.
The charity hopes to harness the miraculous healing abilities of zebrafish, a species that is able to mend its own heart muscle.
Ultimately, the research may make this possible for people to do so too.
Zebrafish are useful to scientists because they have a fully functioning simple heart and circulatory system. If part of their heart is removed, they can grow it back in a matter of weeks.