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...hello ...hello
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8 years ago
A natural form of passive immunity involves the transfer of
A) IgG antibodies by kissing.
B) IgE antibodies by sneezing.
C) IgG antibodies to an infant through the mother's milk.
D) IgA antibodies across the placenta.
E) IgA antibodies to an infant through the mother's milk.
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venuskyvenusky
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8 years ago
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