680219 Antibodies fight off infections and viruses. Source_VOA 680217 Vaccines deliver antibodies that fight disease. Source_VOA 680218 A flu shot contains antibodies that fight the H1N1 virus. Source_VOA
680219 Antibodies fight off infections and viruses. Source_VOA 680217 Vaccines deliver antibodies that fight disease. Source_VOA 680218 A flu shot contains antibodies that fight the H1N1 virus. Source_VOA