Maginot Line

Two obstacles effectively prohibit this availability. Serotonin has a free hydroxy group (the 5-hydroxy which is the H of 5-HT). This is a big polar water-loving pimple which denies it any passage across the brain s defensive Maginot Line, the blood-brain barrier. And there is the second problem. There is a exposed amino group, the amine of T of 5-HT, the tryptamine, which is immediately removed by the body s monoamine oxidase enzyme. In short, it is blocked from entry into the brain because it is both too polar and too metabolically fragile. 

It was manufd at the Chatellerault Arms Plant. Later models(1934-1939) intended for use in tanks, armored cars, airplanes used larger capacity magazines. The so-called "fortress model , used during WWII in Maginot Line had a magazine holding 150 rounds. Chatellerault also furnished an aircraft version which on tests fired 1300 rounds per min... 

Also, the enany was not to enter French territory again and destroy precious parts of it, like in 1914-1918. As trench warfare had been a French victory ( the line had held ) but a very costly one, a new, well-prepared, modem trench line directly at the border had to be created the Maginot Line, simultaneously stressing the Frenchness of the returned provinces of Alsace and Lorraine. The French army invested in concrete, guns and strong defence lines. 

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