The letter T within T-lymphocytes stands for the thymus gland. The T cells area type of lymphocyte that mature in the thymus from the thymocytes. They mature into various types of mature T cells and activate in the immune system. The T cells help to search out and destroy pathogens
Answer:
the sugar phosphate backbone
Explanation:
just took test
I believe it’s called perculation
B. A model cannot show real life conditions. This is so because models aren't alive.