Given that nearly all adaptive immune responses depend on helper T cells, they are arguably the most significant cells in adaptive immunity.
They support the activation of cytotoxic T cells, which kill infected target cells, as well as macrophages and B cells that release antibodies and kill ingested microorganisms. Without helper T cells, we cannot protect ourselves even against numerous ordinarily harmless bacteria, as was vividly shown in AIDS patients. However, helper T cells cannot function by themselves; they must be stimulated to become effector cells. They develop during the innate immunity responses brought on by an infection and become activated on the surface of antigen-presenting cells.
Learn more about helper T cells here
https://brainly.com/question/29518832
#SPJ4