Provided is a fuel cell including: a membrane electrode assembly; a pair of gas diffusion layers holding the membrane electrode assembly therebetween; and a pair of separators holding the membrane electrode assembly and the pair of gas diffusion layer therebetween. Accordingly, it is possible to effectively block the soft rogue AP. A plurality of penetrating members are at least partially contained in the cavities of the cartridge. Yet another aspect of the invention provides a method of producing aliphatic C2-C6 alcohols using acetogenic Clostridium micro-organisms that have been genetically modified to increase C2-C6 aliphatic alcohol formation and decrease the production of the corresponding C2-C6 aliphatic organic acid. A metal deck including an outwardly disposed facade and an inwardly disposed face is connected to the studs.