Stamets@lemmy.dbzer0.com to People Twitter@sh.itjust.works · 22 小时前Blood is blue until exposed to oxygenlemmy.dbzer0.comimagemessage-square125fedilinkarrow-up11.04Karrow-down17
arrow-up11.03Karrow-down1imageBlood is blue until exposed to oxygenlemmy.dbzer0.comStamets@lemmy.dbzer0.com to People Twitter@sh.itjust.works · 22 小时前message-square125fedilink
minus-squareodelik@lemmy.todaylinkfedilinkarrow-up21·14 小时前It doesn’t help that some blood vessels close enough to the surface of the skin can appear blue.
It doesn’t help that some blood vessels close enough to the surface of the skin can appear blue.
Fair point.