Decades: 220s BC 210s BC 200s BC 190s BC 180s BC - 170s BC - 160s BC 150s BC140s BC 130s BC 120s BC
Years: 175 BC 174 BC 173 BC 172 BC 171 BC - 170 BC - 169 BC 168 BC 167 BC 166 BC 165 BC
... it from simpler compounds.
In addition to being one of the building blocks in protein synthesis, it is also important in brain function, as an excitatory ...
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