But unfortunately for the rats and for Corrigan’s surprisingly tender heart, fast-acting poisons don’t work well; rats that feel ill after a bite or two stop eating the bait. So the ...

Techniques for blood collection from the rat include puncture of the heart, retro-orbital plexus, jugular vein, saphenous vein, tail blood vessels, carotid artery, abdominal aorta, and vena cava.