Question

Which of the following is NOT considered to be a site of \(B\) cells development? a. thymus b. bone marrow c. spleen d. liver e. lymph node

Short answer

Answer: a. thymus

Step-by-step solution

Identify the sites of B cell development

B cells develop in two primary locations within the body: the bone marrow and the spleen. In the bone marrow, B cells mature and gain the ability to produce antibodies. In the spleen, B cells continue to develop and become activated, producing a stronger immune response.

Compare the options to the known sites

With the known sites of B cell development (bone marrow and spleen) in mind, we will compare them to the options provided: a. thymus - This is not a site of B cell development; it is a site of T cell development. b. bone marrow - B cells do develop in the bone marrow. c. spleen - B cells do develop in the spleen. d. liver - This is not a site of B cell development; it does play a role in immune function but is not specific to B cells. e. lymph node - While B cells can function and proliferate in lymph nodes, it is not a primary site of development.

Identify the correct answer

Based on the comparison, the correct answer is option a: thymus. This is NOT considered to be a site of B cell development since it is mainly involved in T cell development.