Lungs, nose, airway, mouth, pharynx, larynx,trachea,bronchi, and bronchioles. Its three of those but thats all i could think of from the top of my head. Good luck
The non-protein microbial antigens<span> can not stimulate classical </span>T<span> cell response by themselves, but they are able to elicit the production of antibodies, so that is why we call them </span>T<span> or thymus </span>independent antigens<span>. </span>T independent antigens<span> are divided into 2 classes by the mechanism of activating B cells. TI-1 </span>antigen<span>.
</span><span>For most protein antigens, the production of antibodies by B lymphocytes isdependent on stimulation of helper T cells. However bacterial polysaccharides and lipopolysaccharides, and some polymeric proteins, can stimulate B lymphocytes without involvement of helper T cells.
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