<p>In the paracortex region of [[Lymph Nodes - Anatomy & Physiology|lymph nodes]] binding to MHC II and the presence of Il-4 produced by [[Lymphocytes - WikiBlood#Helper CD4+|CD4<sup>+</sup> T cells]] (Th2 type) causes [[Lymphocytes - WikiBlood#B cells|B cells]] to differentiate. Most [[Lymphocytes - WikiBlood#B cells|B cells]] become [[#Plasma cells|plasma cells]], however small number become [[#Memory cells|memory cells]] .</p> | <p>In the paracortex region of [[Lymph Nodes - Anatomy & Physiology|lymph nodes]] binding to MHC II and the presence of Il-4 produced by [[Lymphocytes - WikiBlood#Helper CD4+|CD4<sup>+</sup> T cells]] (Th2 type) causes [[Lymphocytes - WikiBlood#B cells|B cells]] to differentiate. Most [[Lymphocytes - WikiBlood#B cells|B cells]] become [[#Plasma cells|plasma cells]], however small number become [[#Memory cells|memory cells]] .</p> |