A method including combining a cellular component with a viability enhancer material wherein the combination will inhibit an interaction between the cellular component and a delivery device; and delivering the cellular component through the delivery device. The cable is characterised in that at least one layer selected from said insulating and protecting layers consists of a crosslinked ethylene-alkyl acrylate-unsaturated silane terpolymer composition wherein the alkyl acrylate comonomer comprises more than 5 mole % and the terpolymer composition has a tensile modulus, determined according to ISO 527-2 of less than 100 MPa. A first welding member having a first width larger than a width of the clearance is placed on one face of the sheet member.