Related Clues:

• Sounds as if A should be all in vain
• A letter with the alternative to thanks for the bloody vessel
• The bloody TA as an alternative to A
• Either A or thanks for the bloody vessel
• What's there is not in vain, by the sound of it
• Heart artery
• Chamber exit
• Way from the heart
• The first letter, or a thank you that's right from the heart
• Halt development of unborn over a main artery
• Large vessel used up in 'The Mouse That Roared'
• (evens favourite) A Main Vessel
• Big vessel in sea or tank
• Not viewing odds, favour a team which is close to one's heart
• Great artery