All of the Following Are Accurate Statements About Neonatal Immunity

question 4

Multiple Choice

All of the following are accurate statements about neonatal immunity EXCEPT:

• A)Transfer of maternal IgG across the placenta is mediated by an Fc receptor structurally similar to class I MHC.
• B)IgA is absorbed in the gut from breast milk and re-secreted by the infant into the bronchial mucosa.
• C)IgA secretion into breast milk involves transport through breast epithelial cells,and is dependent on the poly-Ig receptor.
• D)Transport of IgG across the neonatal intestinal epithelium is mediated by an Fc receptor structurally similar to class I MHC.
• E)Loss of maternal antibodies is partly responsible for increased frequency of infections in infants at about 6 months of agE.

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Definitions:

Dominant Firm

A company that has a major share of the market for a particular product or service, often able to influence market conditions.

Competitive Fringe

Small, less dominant firms in a market that compete at the periphery with the larger dominant firms, often by focusing on niche segments.

Price Leader

A company that has a dominant market share and can influence the pricing policies of competitors within the industry.

Dominant Firm Model

A market structure where one firm has a large market share and sets prices, while other smaller firms follow its pricing strategy.