In photosynthesis, the light-dependent reactions take place on the thylakoid membranes. The inside of the thylakoid membrane is called the lumen, and outside the thylakoid membrane is the stroma, where the light-independent reactions take place.
Lymphangioma is often formed during fetal development because of a blockage and subsequent tangling in your lymphatic system. Your lymphatic system is an important part of your immune system which is where the bacteria and any other foreign substances are destroyed.
A hemangioma is an abnormal buildup of blood vessels in the skin or internal organs. 1  Hemangioblastoma: These tumors are benign, slow-growing, and well defined. They arise from cells in the linings of blood vessels.  Hemangiopericytoma: These are rare, grade II or III tumors.