Lymphatic system - ssu.ac.ir fileLymphatic system Edited by: Dr. Talebi. ... lymphatic germinal...
Transcript of Lymphatic system - ssu.ac.ir fileLymphatic system Edited by: Dr. Talebi. ... lymphatic germinal...
Dendritic cells
• Interdigitating Dendritic Cells
• Follicular Dendritic Cells
• Germinal Center Dendritic Cell
• Langerhans’cell
•Located in peripheral tissues or
lymphoid tissues
•They can be activated in •They can be activated in
inflammatory conditions
•Have the ability to uptake, process
and present antigens to T cells. They
are “professional” APC
Thymic lobule
cortical thymocytes cortical thymocytes
subcapsular
region
outer cortical
cortical thymocytes
apoptotic thymocytes
deep cortical
cortico-medular
junction
medular region
macrophages
septum
reticuloepithelial cells
dendritic interdigitated
cells
Hassall corpuscules
medular epithelilal
cells
The relationship between epithelial reticular cells and thymus
lymphocytes. Note the desmosomes and the long processes of epithelial
reticular cells extending among the lymphocytes.