Blood Types Education Chart

BloodTypes
Allhumanbloodmaylookalikebutwhenitistestedusingspecialagents,differencesbecomeapparent.The
mainredbloodcellgroupsareA,B,AB,andO.Thelettersstandfortwoantigens(chemicalsubstancesthat
canbetargetedbyone’simmunesystem)labeledAandB.GroupAbloodhasonlytheAantigen,groupBha s
onlytheBantigen,groupABhasboth,andgroupOhasneither.
Youcannotdonate redbloodcellstojustanyoneandyoucan’treceivebloodfromjustanyone –bloodgroups
needtobematched.
DONOR RECIPIENT
GroupOcandonatered
bloodcellstoanybody.
It’stheuniversaldonor.
GroupAcandonatered
bloodcellstoA’sand
AB’s.
GroupBcandonatered
bloodcellstoB’sand
AB’s.
GroupABcandonateto
otherAB’s,butcan
receivefromallothers.
BloodgroupsfurtherclassifiedasRh‐positiveorRh‐negativearecalledbloodtypes.BloodisRh‐positiveifthe
bloodantige nlabeled“D”ispresentanditisRh‐negativeifthe“D”antigenisabsent.
O+isthemostcommonbloodtype.Notallracialandethnicgroupshave
thesamemixofthesebloodtypes.
Hispanicpeople,forexample,havearelativelyhighnumberofO’s,whileAsianpeoplehavearelativelyhigh
numberofB’s.ThemixofthedifferentbloodtypesintheU.S.populationis:
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