A toxin or other foreign substance which induces an immune response in the body, especially the production of antibodies.
Answer:
main (let me know if I am wrong but that seems right) can I get brainliest please? (rate 5 stars please)
Explanation:
Eccentricity is the ratio of the distance from the center of an ellipse to one of its foci to the distance from the center of the ellipse to one of its vertices.
