Researchers Find New Blood Group System With The ‘Er’ Antigen; Know More 10/10/2022 1 minute read Spread the love The protein required the Er antigen to be added to the surface of the cell. About the Author View All Posts Post navigation Previous: Mrinal Kulkarni: Relationships Have Been the Centre of My Writing and Filmmaking | ExclusiveNext: Did You Know This SS Rajamouli Film Was An Adaptation of a Hollywood Classic?