Molecules on the outer surface of a microorganism act as _ ,which stimulate activity in the immune system. In _ ,circulating antibodies work with B cells to destroy the invaders. In _ ,macrophages and helper T cells are involved.
Answer choices:
Choose 1 for blank space #1: Phenotypes, mutagens, genotypes, or antigens
Choose 1 for blank space #2: cell-mediated immunity, humoral immunity, or non-specific immune response
Choose 1 for blank space #3: humoral immunity, cell-mediated immunity, or non-specific immune response