Tcells communicate to the rest of the body using

secreting chemical messengers

Explanation:

Helper T cell is a type of cell that provides help to other cells in the immune response by recognizing foreign antigens and secreting cytokines that activate T and B cells.

The helper T cell contains the T cell receptors which binds to the antigen-complexed class II MHC molecule on the B cell surface resulting in helper T activation. The activated helper T cen will noe provide a second activation signal to the B cell, which can occur through a variety of proteins.

In order for helper T cell to communicate to the rest of the body, it must share information through chemical messenger it screated.

i think it can have both positive and negative effects on businesses.

for example:

lets say you own a small business and taxes go up 4% that means it is going to cost your business more money to buy product to sell. but at the same time you make more money from the tax rise.

that is my theory.

all i have to say is that people are truly ignorant and don't have anything better to do with their lives.