May 13, 2016 · the presence or absence of d defines a person as “rh positive” or “rh negative,” an extremely important distinction that establishes a person’s basic blood type (in conjunction with their abo type).
[Letter3 5] Rh Blood Type Characteristics Terms Of Use
May 13, 2016 · the presence or absence of d defines a person as “rh positive” or “rh negative,” an extremely important distinction that establishes...