Which of the Following Is NOT a Required Step in B

question 8

Multiple Choice

Which of the following is NOT a required step in B and T lymphocyte maturation?

• A)Proliferative expansion of precursor cells
• B)Cell surface expression of complete antigen receptor complexes
• C)Positive selection
• D)Activation of precursors by foreign antigens
• E)Pre-antigen receptor expression

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Definitions:

Accounts Receivable Period

The standard length of time required for an enterprise to collect receivables from clients for credit sales of goods or services.

Operating Cycle

The duration it takes for a company to purchase inventory, sell products, and receive cash from sales, indicating the company's efficiency in managing its core operations.

Inventory Period

The average time it takes for inventory to be sold and replaced over a period, a key component of efficiency in supply chain management.

Accounts Payable Period

The average duration it takes for a company to pay off its suppliers after receiving goods or services.