Figure 3From: The permeability of SPION over an artificial three-layer membrane is enhanced by external magnetic fieldHistology Section of the RWM Model with SPION. Histology of the RWM cell culture model. The section shows the outer and inner MDCK epithelial layers. In between the 2 MDCK layers are human fibroblasts. The image also shows clusters of SPION being pulled through with a magnetic field.Back to article page