Leptin is produced primarily in the adipocytes of white adipose tissue. It also is produced by brown adipose tissue, placenta (syncytiotrophoblasts), ovaries, skeletal muscle, stomach (the lower part of the fundic glands), mammary epithelial cells, bone marrow, gastric chief cells and P/D1 cells.
The fuel filter, in a 2008 Ford fusion, is located inside of the fuel tank. Drain the fuel from the fuel tank. Remove the fuel filter plate. The fuel filter will slide out. Reverse the process to install the new fuel filter. The fuel filter, in a 2008 Ford fusion, is located inside of the fuel tank. Drain the fuel from the fuel tank.
The fuel filter is normally located along the frame rail of the vehicle. On some trucks it may have been relocated to the engine compartment. On GM trucks the filter is usually located on the inside of the driver's side frame rail about halfway back. When in doubt, trace a fuel line from the engine backwards or from the tank forward in order to locate the filter.