. "\"An endoplasmic reticulum part at which COPII-coated vesicles are produced.\" [PMID:15623529, PMID:16957052]" . . "endoplasmic reticulum exit site" . "ER exit site" . "transitional ER" . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .