Q: What are molecules that the immune system recognize as foreign to the body?


Read this paragraph and choose the correct option from the provided answers:

The average kinetic energy of atoms (each of mass and average speed ) in a gas is related to the temperature of the gas, measured in Kelvin. The Boltzmann constant is a constant of nature, equal to.

 Choices:

- viruses

- peptides

- tumors

- antigens


A:
antigens