Answer the following question in at least 5 sentences to earn 25 possible points:

“Preventive vaccines work by “teaching” the immune system to recognize specific threats before encountering them—in this case, the new coronavirus. Equipped with this information, the immune system prepares specialized T cells and antibody-producing B cells that stand ready to neutralize the threat should it appear. Whereas antibodies can bind to copies of the virus itself and mark them for destruction, T cells can recognize the cells in our body that have been infected and eliminate them before they enable spread of the virus to other cells” (Brodsky, 2020, paragraph 2).