The immune system is a system of many biological structures and processes within an organism that protects against disease. To function properly, an immune system must detect a wide variety of agents, known as pathogens, from viruses to parasitic worms, and distinguish them from the organism's own healthy tissue.o function properly, an immune system must detect a wide variety of agents, known as pathogens, from viruses to parasitic worms, and distinguish them from the organism's own healthy tissue.
The cost to run for president in the general election can amount to at least $70 million USD, although the amount of money required can vary. It is possible that at some point in the future, all presidential candidates will run without taking any federal contributions.
Public funding of Presidential elections means that qualified Presidential candidates receive federal government funds to pay for the valid expenses of their political campaigns in both the primary and general elections. National political parties also receive federal money for their national nominating conventions.ublic funding of Presidential elections means that qualified Presidential candidates receive federal government funds to pay for the valid expenses of their political campaigns in both the primary and general elections. National political parties also receive federal money for their national nominating conventions.