Changes

===Antigen Presentation by Dendritic Cells===

===Antigen Presentation by Dendritic Cells===

*Dendritic cells present antigen to [[Lymphocytes#T cells|T cells]]

Circulating [[Monocytes|monocytes]] differentiate to form immature dendritic cells called '''Langerhans Cells'''

*Circulating [[Monocytes]] differentiate to form immature dendritic cells called '''Langerhans Cells'''

* Some of the peptides formed bind to the cell’s [[MHC]] molecules

The Langerhans cells leave the epithelium and travel via the afferent lymph flow. They are now known as '''Veiled Cells'''. Veiled cells enter the paracortical region of the [[Lymph Nodes - Anatomy & Physiology|lymph node]] where they present antigen to the T cells. They are now known as '''Interdigitating Dendritic Cells'''.

 

*The Langerhans cells leave the epithelium and travel via the afferent lymph. They are now called '''Veiled Cells'''

 

*Veiled cells enter the paracortical region of the [[Lymph Nodes - Anatomy & Physiology|lymph node]] where they present antigen to [[Lymphocytes#T cells|T cells]]. They are now called '''Interdigitating Dendritic Cells'''

==TH₁ Cells==

==TH₁ Cells==