The transfer of antibodies across the placenta before birth is seen in

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The transfer of antibodies across the placenta before birth is an example of passive natural immunity. The antibodies are naturally passed from the mother to the developing fetus, providing temporary immunity to the child. This is different from active immunity, which is acquired through an immune response stimulated by exposure to an antigen. Artificial immunity refers to immunity obtained through vaccination or other medical interventions.

The Transfer of Antibodies Across the Placenta Before Birth Is