Protagon

• (n.) A nitrogenous phosphorized principle found in brain tissue. By decomposition it yields neurine, fatty acids, and other bodies.
Found on http://thinkexist.com/dictionary/meaning/protagon/

Protagon

Pro'ta·gon noun [ Proto- + Greek ... a contest. See. Protagonist . So called because it was the first definitely ascertained principle of the brain.] (Physiol. Chem.) A nitrogenous phosphorized principle found in brain tissue. By decomposition it yields neurine, fatty acids, and oth...
Found on http://www.encyclo.co.uk/webster/P/179
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