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https://www.izb-online.de/wp-content/uploads/2020/03/Bild-1_Branchennews_Liferservice-des-Lernens_beitragsbild-hoch_20173.jpg400341At the cellular level, learning and memory require continuous readjustment of the strength of synaptic junctions – the functional connections between nerve cells. These modifications are achieved by the incorporation into individual synapses of proteins that modulate the efficiency of intercellular signal transmission. The blueprints for the synthesis of these molecules, in the form of messenger RNAs (mRNAs), are delivered to active synapses by a dedicated transport system.