Ok, so this is simple. I'll define each one. Axons: Part of the nerve cell... Not this one! Lymph nodes: Part of the throat that filters germs... Nope! Red blood cells: These fight off intruders... NOPE! Antigens: <span>a toxin or other foreign substance... YUP!!!</span>
Explanation: B DNA is a good approximation of the structure of DNA found in cells i.e. in both plant and animal cells, the most common structure of DNA observed is the B DNA.