11C is a perspective view of the staple anvil of FIG. 11A; [0045]FIG. 12A is a schematic enlarged cross-sectional view of the staple cartridge and staple anvil working surfaces taken along section line 12A-12A of FIG. 11A; [0046]FIG. 12B is a schematic enlarged cross-sectional view of working surfaces of an alternative embodiment of a staple cartridge and staple anvil; [0047]FIG. 12C is a schemati