The Rh factor identifies the presence of the rhesus protein in blood. The Rh factor can be represented by a + or – sign. It is i
mportant to know the Rh factor because just like how the antigens on the blood must be compatible, the rhesus protein in blood must also be compatible.If a person has Rh+ blood they can receive_______ blood. If a person has Rh- blood they can receive______blood.
