TOPIC: IMMUNITY AND INFLAMMATION 

📌 POINTS TO PONDER 

🔹Pan-receptor defect: It is the defect in which all chemotaxin receptors are decreased. It is seen in localized aggressive periodontitis which is characterized by a decrease in chemotactic responses to a variety of chemotactic factors, including C5a, FMLP (formyl peptide) and leukotriene B4. 

🔹CD, i.e, cluster of differentiation system are the group of receptors which enable the cell to interact with each other molecules/cells.