What Cell Synthesizes And Secretes Proteins?

What Cell Synthesizes And Secretes Proteins? The endoplasmic reticulum is an organelle that is responsible for the synthesis of lipids and the modification of proteins. Where are secreted proteins synthesized? Secretory proteins are synthesized by ribosomes attached to the cisternae of the endoplasmic reticulum and translocated to the lumen of the endoplasmic reticulum. What organelle