How Are Humans Able to Produce Billions of Unique B

question 36

Multiple Choice

How are humans able to produce billions of unique B and T cell receptors?

• A) Each time a pathogen is encountered, a new receptor is produced.
• B) The two different genes that encode receptor proteins allow for many versions of receptors to be produced.
• C) Random splicing of gene segments encoding receptor proteins allows for 2.5 billion potential combinations.
• D) Antigen-presenting cells stimulate B and T cells to each produce billions of receptor molecules.
• E) There are billions of B and T cells, each of which produces a single receptor on its cell surface.

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