Es una pregunta ? pero si no entonces ok!!
How does the immune system
produce memory cells for antigens?
This is the BEST research
question for students to ask if they are conducting research on antibodies
because t<span>he answer to this question must tell about
production of B-cells, recognition of antigen, T-helper cells, colony formation,
and phagocytosis of foreign antigen, T-killer cells, and all other details which
is possible.</span>
Answer:A
Explanation a trait of the organism may be changed in either a negative positive or netural way all of the answers are DBDA
Running water both beach answers and valleys
