And let's begin on the endoplasmic reticulum. So along the outer membrane of this or along the outer section of the membrane of the endoplasm reticulum. So on the cytoplasmic side. So this is the cytoplasm. And on the cytoplasmic side of the endoplasm reticulum, we have these ribosomes shown by these dots. So let's suppose at this ribosome, we begin the process of protein synthesis on the cytoplasmic side of the membrane.