explanation

Mr Rees said he had seen no evidence of this being done and not received any explanation despite trying to contact her.

There did seem something convenient about his explanation for why the agreement covers two seasons rather than one, in negotiations Guardiola says were concluded in two hours.

"Earlier explanations of mutual exclusivity introduced a whole new problem," Feiman says.

"It is difficult to say. In the existing data we cannot find an explanation for the effect, but we will now continue to study this process at a cellular and molecular level," says Olaf Bergmann.

In addition, the researchers found that these cumulative small genetic effects provided an important explanation for the puzzle that some people with a faulty gene copy develop cardiomyopathy, while others don't.