Rh antigens are separate from abo antigens and were originally discovered in rhesus monkeys. select all correct statements about rh antigen.

*A second Rh+ fetus is at risk for hemolytic disease of the newborn in Rh- mom womb. Because the mother is immunized against the erythrocytes' antigen of its child, so these will be destroyed by her immune system.

*ABO antibodies are automatically made during its maturation in the mom's womb. Bur rhesus antibodies are not, they are synthesized after an antigenic stimulation by a rhesus antigen.

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option a and d is the correct answer

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