The present invention describes various support matrices to which cells can adhere and proliferate. Such support matrices are useful for implantation in a wound site to promote healing and regeneration of damaged tissue. The present invention further describes an article including a membrane having at least one layer having a porous surface and also including submucosal intestine tissue, and cells adhered to the layer. The present invention further describes that the cells adhered to the layer include chondrocyte cells.