332 Int. J. Medical Engineering and Informatics, Vol. 9, No. 4, 2017 Copyright © 2017 Inderscience Enterprises Ltd. Cell cocultures on coated scaffolds applied to liver models Odin Ramírez-Fernández*, Rafael Godínez and Esmeralda Zuñiga-Aguilar Departamento de Ingeniería Eléctrica, Universidad Autónoma Metropolitana, Unidad Iztapalapa, Apdo, Postal 55-534, Iztapalapa, México Email: odinramirezfernandez@gmail.com Email: rgodinezfer@gamil.com Email: esza08@gmail.com *Corresponding author Luis E. Gómez-Quiroz and María C. Gutiérrez-Ruiz Departamento de Ciencias de la Salud, Universidad Autónoma Metropolitana, Unidad Iztapalapa, Apdo, Postal 55-534, Iztapalapa, México Email: legq@xanum.uam.mx Email: mcgr@xanum.uam.mx Juan Morales and Roberto Olayo Departamento de Física, Universidad Autónoma Metropolitana, Unidad Iztapalapa, Apdo, Postal 55-534, Iztapalapa, México Email: jmor@xanum.uam.mx Email: oagr@xaum.uam.mx Abstract: Volumetric cell cultures are widely used as an experimental model to mimic the characteristics and responses of cell in tissues in vivo. Hepatocytes, particularly, are highly specialised cells, their geometrical conformation, and their coculture with no parenquimal cells and vascularised tissue, are essential to their physiology and proper function. Polymeric scaffolds for cell growth have been modified through plasma polymerisation to improve their biological properties. This work presents a Poly (L-lactic acid) (PLLA) coated scaffold with polypyrrole plasma doped with iodine (Ppy-I). The scaffold where seeded with two different cell lines, hepatocytes (HepG2) with stellate cells (Ito), and hepatocytes (HepG2) with endothelial cells (HUVEC), the data were evaluated against control hepatocytes (HepG2) culture. The morphology of the cells was evaluated by microscopy; to corroborate the cell proliferation on the material, images of the samples with