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Infants are born with a passive immunity that occurs when immunoglobulin antibodies cross the placenta from the maternal circulation prior to birth. Which immunoglobulin is capable of crossing the placenta?

Respuesta :

lmsalaudeen

Answer:

Immunoglobulin G (IgG)

Explanation:

There are five classes of human antibodies:

  • IgG
  • IgM
  • IgD
  • IgA
  • IgE

IgG is the most abundant and the only one capable of crossing the placenta. IgG is present in all body fluids and protects against infections.

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