🦠🔑🛡️

#antigen #immune response #pathogen #molecular pattern #immunogen #non-self recognition

🩸🅰️🅱️🅾️

#epyt doolb #ABO system #blood group #antigen #o type #a type #b type #AB type

🅰️🅱️🩸

#codominance #epyt doolb #ABO system #allele #antigen #multiple alleles

🩸🧬MNS

#MNS blood group #epyt doolb #serology #antigen