Place the following statements that describe the 5 steps in an adaptive immune response in the order in which they occur.

a. long lived-immune cells allow the second response to a given microbe to be stronger and faster than the first response

b. adaptive immune cells are born in the bone marrow, then mature in either the bone marrow or the thymus

c. adaptive immune cells use specific receptor proteins to bind to antigens very specifically

d. intracellular signaling pathways are initiated, causing the adaptive immune cell to change cell division, gene expression, and protein translation

e. adaptive immune cells kill invading microbes, either directly or indirectly