Respuesta :

michellekim722

Answer:

If I remember correctly we call them blood donors.

Explanation:

I hope this helped.

Bye!

miriammenenguez

They make up just 2 in 50 people, their plasma is universal. This means their plasma can be used by anyone. At noncommercial donation sites, people can donate plasma every 28 days, up to 13 times a year.

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