haemoglobin

  • Facts

    If Our Blood is Red, Then Why do Veins Appear Blue?

    If blood is red, and we bleed red whether it’s for a lover or whether it’s for lab tests, then why are the veins on our wrist and ankles appear blue? The blue color is less in the environment, that is there are literally no animals of blue color. Except for one butterfly and frog who are not actually blue…

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