chymus Structure Capsule(CT,)-interlobular septa Endothelial reticular cel(erC) a Cortex: Lymphocyte: thymocyte Macrophage: secrete IL-1 ERC Lc, few a Medullas Macrophage: secrete IL-1 t Thymic corpusclesThymus ▪ Capsule ( C.T.) interlobular septa ▪ Cortex: Endothelial reticular cell (ERC) Lymphocyte: thymocyte Macrophage: secrete IL-1 ▪ Medulla: ERC Lc: few Macrophage: secrete IL-1 Thymic corpuscles Structure: