Endoplasmic reticulum stress reduces COPII vesicles formation and modifies Sec23a cycling at ERESs G. Amodio1, O. Moltedo1, S. Franceschelli1, P. Remondelli2 1Dipartimento di Farmacia, Univ. of Salerno, Italy 2Dipartimento di Medicina e Chirurgia, Univ. of Salerno, Italy