Which of the Following Statements Is True Regarding the Complement

question 23

Multiple Choice

Which of the following statements is true regarding the complement component C4B?

• A)Deficiency of C4B is associated with systemic lupus erythematosus (SLE).
• B)C4B has similar properties to those of C4A.
• C)The thioester bond of C4B is preferentially acted upon by amino groups of macromolecules.
• D)C4B is encoded in the class II region of the MHC.
• E)The gene for C4B is duplicated or deleted in some individuals.

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The financial metric resulting from subtracting the cost of goods sold from net sales revenue.