<prompt> Answer this question truthfullyWhat do red cell antigens refer to?  <response>: <reason> These antigens are extremely rare and are of little concern in selecting compatible units for transfusion. They may be implicated in rare cases of hemolytic disease of the newborn, however.Batty By Biles Bi Box Bx a Christiansen Chr a HJK HOFM JFV JONES Jensen Je a Katagiri Kg Livesay Li a Milne Oldeide Ol a Peters Pt a Rasmussen RASM Reid Re a REIT SARA Torkildsen To a Bg Bennett-Goodspeed: These are actually Human Leukocyte Antigens that cause confusing results on serological tests of erythrocytes. 