How Prenatal Blood Tests Screen for 'Alien' DNA

The DNA floating through your veins doesn't only belong to you. Your blood also contains what some scientists have called "alien" DNA. New tests can isolate that DNA and tell patients a lot about their health. Pregnant women have been the first to benefit from these tests in routine care. But KPBS science reporter David Wagner says they've also been the first to deal with their limitations.

[TiffanyStarr]

When you watch ancient aliens and are excited to see this video... It's so disappointing

[LoneMaestro-]

That baby has the most unamussed expression i have ever seen he didn't even giggle or laugh at being swung on the swing

[arianniforever]

i am rh negetive, have multiple bad experience with loss abortions :( in my heart in knew my baby was still ilive :( and all the time dr would draw alot of blood.

[lyndacampbell]

A- RH negative blood here. Have to have RH D as People with negative blood types have no protein around her blood cells that's what makes it difference between positive blood and negative blood

[that_oneweebkid]

Is rh negative blood considerd alien dna

[Miss_Sippy]

'alien' also means - anything not OF. Sorry to all of you looking for a Rh Negative Reptile.

[shaktipriestess]

If you have not found it on this earth as of yet, then it’s alien to us. As in how did this just show up, with one quarter of world population, with very dense percentages in Basque, and Irish?

[dalehudson]

I have asked them the doctor"s and nurse"s what's is my blood type"s and they won"t tell me I have hearing some blood technician"s saying my blood was very differently from other"s blood this has happened at Wilis knighton hospital in sherveport Louisiana they we"re very dreadful of me all the hospital"s doctor"s and nurse"s they we"re afraid of me and very frighten and scared of me they haven"t seen any body with my blood type"s before because my blood is very differently I'm thinking it"s could be mixed together with alien"s blood and they din"t won"t to be telling me about it they are acting very weird around me

[recordedgraal]

maybe everything this channel has written is wrong

[nataliepuckett]

Does that mean your kid has alien DNA?

[modeljoanieBosserman]

Alien just doesn't sound right when it could be incarnate parentage

[Carlos_Costa]

This Title is 100% misleading. Why making people waste their time?

[EarlJohnson-wmbb]

I have a huge Pecker and I am negative blood. The women say it has to be Alien because it "Out if this world" 😲

[nataliepuckett]

Yeah I'm rh- and have 7 healthy babies I'm blessed and I know that but it hasn't been without peculiar behavior when giving birth I don't want to say a lot but I know they left me to parish if it weren't for a simple diar mistake this nurse made by serving me lunch well I'd probably not be sharing my comment!

[HezChzTruRecDevCatEtazVacDevHa]

Ones first money theft is not concern past kids team level up money and push sex and blood