A number of antibody isotypes can be transported across tissues and cells such as the lumen of the gut, breast tissue, or placenta. Which of the following statements regarding these isotypes is correct?

Question

A number of antibody isotypes can be transported across tissues and cells such as the lumen of the gut, breast tissue, or placenta.  Which of the following statements regarding these isotypes is correct?

Accepted Answer

IgG is primarily transferred to neonates via the placenta

Answer

IgG, IgE, and IgA use the same secretory structures to transport antibodies across tissues

Answer

The ability of IgA to be secreted into breast milk is via the neonatal Fc receptor

Answer

Secretory IgA in the gut lumen is hetrodimeric (composed of different sets of immunoglobulin chains), so that it can bind to two different antigens

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A number of antibody isotypes can be transported across tissues and cells such a...

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