Question

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what may happen if a rh negative recipient receives rh positive blood?
the rh factor may be neutralized by the recipients immune system
the recipients immune system may be unaffected
the recipient may experience an allergic reaction to the rh factor
the recipients immune system may produce antibodies against the rh factor
the recipients immune system may produce antibodies against the abo factor

Explanation:

When a Rh - negative recipient receives Rh - positive blood, the recipient's immune system recognizes the Rh factor (a foreign antigen) in the donated blood. The immune system's response to foreign antigens is to produce antibodies against them. This is a basic principle of immunology.

• The Rh factor is not neutralized in a simple sense; the immune system acts by antibody production.
• The immune system is affected as it detects a foreign antigen (Rh factor).
• It is not an allergic reaction; allergic reactions involve different immune mechanisms (like IgE - mediated responses in some cases), while this is a classic antibody - antigen (immune response to a foreign blood - group antigen) situation.
• The ABO factor is not relevant here as the question is about Rh incompatibility.

Answer:

The recipient's immune system may produce antibodies against the Rh factor.