A method for operating a fuel cell plant and a fuel cell plant are provided. The first mask section has a trailing edge portion with locator pins for cooperating with a positioning tab on the locator to position the first mask section along the trailing edge of the airfoil, and a leading edge portion for extending around the leading edge of the airfoil to locate the first mask section along the convex surface. The comparison model adheres to a second set of syntax and semantics, wherein the comparison model includes a second expression, the second expression including a second operator and a second operand. Forwarding decisions for these subsequent frames are then rendered by hardware logic circuits of the switch rather than by the router. The compounds can be used to inhibit complement by binding to C9 analogously to CD59, or to maintain complement inhibition, by blocking CD59 binding to C9.