In unicellular organisms the single cell performs all of the necessary functions for life. In multicellular organisms groups of cells specialize within tissues and organs performing specific tasks.
Keywords: cadherin; proliferation; differentiation
Multicellular Organs and Organisms
Elizabeth R. Andrews, University of Cambridge, Cambridge, UK
Published online: April 2001
DOI: 10.1038/npg.els.0001272
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Figure 1. The
role of the stem cell in haematopoiesis.
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| Further Reading | |
| book Alberts B, Bray D, Lewis R et al. (1994) Molecular Biology of the Cell, 3rd edn. New York: Garland. | |
| Custodio MR et al. (1998) Primomorphs generated from dissociated cells of the sponge Suberites domuncula: a model system for studies of cell proliferation and cell death. Mechanisms of Ageing and Development 105: 45–49. | |
| Hobmayer E, Holstein TW, David CN et al. (1996) Identification of a Hydra homologue of the betacatenin/plakoglobin/amadillo gene family. Gene 172: 155–159. | |
| Muller WEG (1998) Origin of Metazoa: sponges as living fossils. Naturwissenschaften 85: 11–25. | |
| Noselli S and Agnes F (1999) Roles of the JNK signalling pathway in Drosophila morphogenesis. Current Opinion in Genetics and Development 9: 466–475. | |
| Perillo NL, Marcus ME and Baum LG (1998) Galectins: versatile modulators of cell adhesion, cell proliferation and cell death. Journal of Molecular Medicine 76: 407–412. | |
| Rehorn KP, Thelen H, Michelson AM and Reuter R (1996) A molecular aspect of hematopoiesis and endoderm development common to vertebrates and Drosophila. Development 122: 4023–4031. | |
| book Watson J et al. (1995) Molecular Biology of the Gene. New York: John Wiley. | |
