"The tendency during the campaign has been for Bush not to attack, or, if he was forced to attack, to go back positive as quickly as possible, " one GOP insider told me.

CNN: Stuart Rothenberg: Can Bush win by 'going positive?'

If your cancer is HER2 positive, you may also be given a targeted therapy to attack the protein that's overproduced in these cancers.

CNN: Recurrent breast cancer

However, a fourth bonus-point try eluded Bath, and Quins ended the game on a positive when Williams finished off a long-range counter-attack before Evans added the conversion.

BBC: Bath 24-13 Harlequins