Rhnull: The Rarest Blood Type on Earth. #GoldenBlood Hashem Al-Ghaili February 7, 2019 Leave a Comment on Rhnull: The Rarest Blood Type on Earth. #GoldenBlood Posted in Seen Them Share: XFacebookPinterestLinkedin For more videos, follow me on Facebook: https://www.facebook.com/ScienceNaturePage/ #Biology #HumanBody #GoldenBlood source Author: Hashem Al-Ghaili