A sterile biofilm could be engineered to isolate the glue-like substance while eliminating the adverse properties of the bacteria. The resulting sterile glue-like substance would be used to help the cells stick to the support structure. The engineered biofilm could be added to the support structure in the laboratory that produces the support structure or just prior to the addition of the cells by the user. Alternatively, the biofilm and support structure could be combined intra-corporally. This biofilm also could be used as an independent polysaccharide based adhesive with mild to moderate adhesion forces. The biofilm could serve as a surgical adhesion or grouting for cells, for tissue fixation (soft tissue to soft tissue, soft tissue to bone, etc.) and as a sealant. The biofilm could be used in conjunction with other implants and devices. The biofilm could be used to coat a stent.