Veins are not in fact blue. They only look blue because subcutaneous fat only allows blue light to penetrate skin
Whatever you do in life, give 100 per centunless you're donating blood
Blood is like a parachute. If it's not there when you need it, you'll probably never need it again.
Moths have white blood
Mosquitos are more likely to bite people with Type O blood

Blood is more permanent than land. Land endures longer than human beings, but only because human beings are willing to shed blood over land. As such, blood is the only permanence that the human being has in time. Eternity can only come from blood and not from land.
Blood is not red when fresh at midnight, but a purplish black that easily blends into the shadows.
My friend was diagnosed with HIV but didn't want me to tell anyoneI promised, and then we both pricked our fingers and made a blood oath just to make extra sure
Blood is cleansing. Life is in the blood, so anything covered by blood, from God's perspective, is covered with life and for that reason is deemed cleansed.
Earthworms are cold-blooded
Blood is liquid life, and when it escapes from our bodies we are alarmed to the very core of our brains.
Lobsters have curious blood. It is normally transparent, but then turns blue when exposed to oxygen.