In 1930, Claude discovered the process of cell fractionation, which was groundbreaking in his time. The process consists of grinding up cells to break the membrane and release the cell's contents. Claude then filtered out the cell membranes and placed the remaining cell contents in a centrifuge to separate them according to mass. He divided the centrifuged contents into fractions, each of a specific mass, and discovered that particular fractions were responsible for particular cell functions.
Gompel, Cl (2006). "[Albert Claude, an exceptional man]". Bull. Mem. Acad. R. Med. Belg.161 (10-12): 543–55. PMID 17503730.
Raju, T N (October 1999). "The Nobel chronicles. 1974: Albert Claude (1899-1983), George Emil Palade (b 1912), and Christian Réne de Duve (b 1917)". Lancet354 (9185): 1219. doi:10.1016/S0140-6736(05)75433-7. PMID 10513750.
Rheinberger, H J (1997). "Cytoplasmic particles in Brussels (Jean Brachet, Hubert Chantrenne, Raymond Jeener) and at Rockefeller (Albert Claude), 1935-1955". History and philosophy of the life sciences19 (1): 47–67. PMID 9284642.
Frühling, J (1994). "[Eulogy of Professor Albert Claude, Nobel Prize in Medicine and Physiology in 1974]". Bull. Mem. Acad. R. Med. Belg.149 (12): 466–9. PMID 8563685.
de Duve, C (1987). "[Albert Claude and the beginnings of modern cell biology]". La Cellule74: 11–9. PMID 3079269.
Henry, J (1984). "[Eulogy to Professor Albert Claude, honorary member of the Royal Academy]". Bull. Mem. Acad. R. Med. Belg.139 (3): 197–202. PMID 6388698.
Tagnon, H (June 1983). "[In memoriam Prof. Albert Claude]". Revue médicale de Bruxelles4 (6): 450–2. PMID 6348913.
Olsen, B R; Lie S O (December 1974). "[Nobel prize in medicine 1974 (Albert Claude, George Palade, Christian de Duve)]". Tidsskr. Nor. Laegeforen.94 (34-36): 2400–3. PMID 4614493.
Florkin, M (December 1974). "[Homage to Albert Claude and Christian de Duve, Nobel Prize laureates in medicine and physiology, 1974]". Arch. Int. Physiol. Biochim.82 (5): 807–15. doi:10.3109/13813457409072328. PMID 4142698.
Palade, G E (July 1971). "Albert Claude and the beginnings of biological electron microscopy". J. Cell Biol.50 (1): 5d-19d. doi:10.1083/jcb.50.1.5d. PMID 4935221.