A small particulate component of the cytoplasm.

Palade first described the association of what were subsequently determined to ribosomes with membranes. He and Keith Porter subsequently named this structure the endoplasmic reticulum. Digital facsimile from PubMedCentral at this link.

In 1974 Palade shared the Nobel Prize in Physiology or Medicine with Albert Claude and Christian de Duve "for their discoveries concerning the structural and functional organization of the cell."