What two structures generate the cells responsible for immune responses?

•B lymphocytes and T lymphocytes

•thymus and lymphocytes

•bone marrow and lymphocytes

•bone marrow and thymus

B cell maturation occurs in the bone marrow, whereas progenitor cells migrate from the bone marrow and develop and mature into naïve T cells in the organ called the thymus. On maturation, T and B lymphocytes circulate to various destinations.