And connecting these surtoli cells are the intercellular junctions, the tide junctions which basically create a watertight seal. Now, below our surtole cells, what keeps our surtoli cells together and attached to a membrane is this basement membrane layer. And below that we have these fibroblasts which are specialized types of cells that produce and release collagen that forms the extracellular matrix that surrounds our cells. Now, the other important types of cell that we have to know is our Ladic cell. This is also known as the intrastitial cell and these Ladic cells are shown in green. So we have the lady cells, we have these hertoli cells and we also have these red structures which are the capillaries that bring not only nutrients and oxygen but also important types of hormones to our testes, to our Simoniferous tubules of the testes.