Donor?

Can you read it?
Do you see?
There's pints of it in you and me.
A needle jag
It gets sucked out
We need donations
There is no doubt

Group
True
Bath
Hound
Curdling (love this word)
Shed
Thirsty
Worm
Cold

What else goes?

Thank you all for looking/commenting/favouriting and starring yesterday's blip cos it made it to spot light!! yay! I have no idea how they work out which photos get there but I'm well chuffed. My second photo to make it ever. Cheers Blip Chums x