Why You Can't Mix Blood Types

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Published 2018-07-05

While blood types have been around for at least 20 million years, doctors have only known about them for about 116 years. Prior to the 1900s, countless people died when they were injected with the wrong type of blood. This is because blood is composed of proteins called antigens that, when mixed with the wrong type, fight each other as if you're body was fighting an infection.

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All Comments (21)

@squirclequir1800 5 years ago

So basically our blood types are like different wines to mosquitos
@caralu5771 5 years ago

The mosquitoes must be enjoying the differently flavored blood we all have
@AskingAlexandria2303 5 years ago

I donated blood today, it feels good to be someone’s type 😏
@itaybron 5 years ago

I don't wanna brag but i took a blood test and i got an A+ 😎
@doodskie999 4 years ago

Humans: we must be careful with blood types and not inject them to others Mosquitoes: its free real estate
@DonaldJDuck-ql3jj 4 years ago

"Don't go injecting your pets with your blood" there go my plans for the evening, guess I'll just keep watching YouTube
@cloudrainbow2561 5 years ago

Questions we have but never bothered to look it up. Thank you recommendations list.
@parthbhoyar228 5 years ago

Any AB+? We guys can take blood of any blood group😎
@krultepes3718 5 years ago

“Why settle for B- when you can have A+”
@williamdowden4494 4 years ago

The mosquito comments got me thinking. I have AB- and every year when the family gathers up north (I live in Michigan), I am almost never bitten unless I am the only one around and even then it is pretty rare.
@agnieszkavanheirreweghe5837 4 years ago

When you are 0- and you get worshipped whenever you donate blood 😂😂
@RoccosVideos 5 years ago

B+ here.
@mycobacteriem2540 1 year ago

theres so many intricacies of blood typing and transfusion med, and thats what i like about it. my jobs stressful but you learn a lot and its fascinating. blood type is also determined by two sets of alleles so someone who is type A or type B can technically be AO/AA or BO/BB since O is recessive. there are also subgroups of type A that arent too uncommon and can cause reactions as well (someone who is type A2 can create an anti A1 which is the most common of the two groups).
@aaronzapolin4866 5 years ago

sooo blood is a poison?
@lucasrestrepogutierrez6048 4 years ago

Thank you, you just made my whole homework 👍🏼
@NgJackal1990 3 years ago

This is bloody amazing!
@mr.potatoeshead5317 5 years ago

O positive is ranked #3 common and O negative is ranked #7 out of the 12 blood types. But, now there is new findings of 2 new blood types in recent years with both having less than 1000 people worldwide within them.
@rubixuo 5 years ago

Well.. my blood type is O- and both of my parents are O-, BUT WHY MY BROTHER HAVE O+?! T-T
@puffymarshmallow1342 5 years ago

O+ here. Anyone else?😕
@meechanyo7909 5 years ago

A few years ago I found out I was O+ which was same as my grandma and maternal uncle, I was surprised because pretty much everyone around me had B+ since we're South Asian so I come in the rare type in here. I recently found out my baby cousin who's from my maternal aunt has also O+... Blood groups are really fascinating..