Helper T cells and cytotoxic T cells have different jobs in our immune system. Let’s break it down:

1. Helper T Cells (CD4+ T Cells):

   • What They Do: They help other immune cells work better. This includes B cells and cytotoxic T cells.
   • How They Work: They find special markers called antigens on cells that show them off. These markers are shown using MHC II molecules.
   • Think of Them Like This: They’re like the "conductors" of an orchestra. They make sure everything works together smoothly to fight off germs.

2. Cytotoxic T Cells (CD8+ T Cells):

   • What They Do: They directly attack and kill cells that are infected or cancerous.
   • How They Work: They find antigens on all types of cells using MHC I molecules.
   • Think of Them Like This: They act like "snipers," carefully aiming at and taking out specific enemies.

Together, these two types of T cells form a strong defense system in our body!