Protein assembly line. (IMAGE) Auburn University Department of Physics Caption Artistic representation of a neuron's interior resembling a factory assembly line: worn-out protein spheres are being replaced and upgraded by newer, vibrant protein spheres. Credit Auburn University Department of Physics. Usage Restrictions Can be used along with the article. License Original content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.