Answer:
Immune system of the body helps in fighting with the infectious agents that are foreign for the body. So the immune system protects us from infection.
When any foreign substance(antigen) comes in the body B-lymphocyte recognize it by binding the antigen through its receptor. After recognizing the antigen, B cell divides into antibody-producing plasma cell and memory cell.
Antibodies produced by plasma cells help in destroying the antigen by getting the antigen recognized by phagocytic cells or by complement activation.
B cells are antigen-presenting cell which present antigen to T cell and then T cell activates and produce chemicals that kill the antigen. Therefore the immune system has many immune cells that activate when an antigen comes in the body. This is how the immune system functions.
It occurs in the first phase known as the Prophase. During this the chromosomes inside the cell’s nucleus condense to form tight structures.
. excess water on<span> the </span>slides will<span> boil </span>during fixation<span>. Why should </span>you<span> be careful . </span>During<span> the</span>performance<span> of the </span>simple staining procedure<span>, </span>you failed<span> to </span>heat fix your E<span>. </span>coli smear preparation.Upon microscopic examination<span>, how </span>would you expect<span> this </span>slide<span> to </span>differ<span> from the </span>correctly prepared slides<span>? When </span>heat fixing<span> the.</span>
Antarctic Treaty, Antarctica is the only continent without a native population is an agreement regulating the international situation. Signed in 1959, began to be implemented in 1961. Has been approved so far been signed by 50 countries.
<span>Treaty of Antarctica can be used freely for scientific study and indicates the military can not be used for any purpose.</span>
