🩸➕➖

#epyt doolb #rh positive #rh negative #rhesus factor #blood group

🩸➕/➖

#epyt doolb #rh factor #rhesus factor #rh positive #rh negative #blood group

🩸➖

#rh negative #rhesus factor #epyt doolb #blood group #negative blood

🩸🐒

#rhesus factor #rhesus monkey #blood group origin #landsteiner #blood research

🩸🐒-

#rh factor #rh negative #epyt doolb #rhesus factor #negative blood #blood antigen

🩸🐒+

#rh factor #rh positive #epyt doolb #rhesus factor #positive blood #blood antigen

🅰️🅱️🅾️±

#blood group system #abo rh #blood typing #blood antigens #rhesus factor