(IMAGE) Goethe University Frankfurt Caption The fully assembled PLC machinery of antigen processing is formed by the antigen transport complex TAP1/2, the chaperones calreticulin, ERp57, and tapasin, and the heterodimeric MHC I (heavy and light chain in teal and green, respectively). Credit Christoph Thomas & Robert Tampé, Goethe University Frankfurt, Germany Usage Restrictions To be used only when reporting on Goethe University Frankfurt. Mentiong credit is mandatory. 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.