Answer:
Helper T cells are arguably the most important cells in adaptive immunity, as they are required for almost all adaptive immune responses. They not only help activate B cells to secrete antibodies and macrophages to destroy ingested microbes, but they also help activate cytotoxic T cells to kill infected target cells.
Explanation:
Helper T cells become activated when they are presented with peptide antigens by MHC class II molecules, which are expressed on the surface of antigen-presenting cells (APCs). Once activated, they divide rapidly and secrete cytokines that regulate or assist the immune response.
Helium is inert and odorless colorless
Answer:
that's more of a personal question but if u was answering that...
Explanation:
1. save the environment, because we live in the environment and without it none of us would be alive and the environment is something that affect us all
Answer:
Yes
Explanation:
They are water soluble, hope this helps!
Catalysts can speed chemical reactions by lowering the activation energy
