Ras Pathway. Ras is a membrane-associated guanine nucleotide-binding protein that is normally activated in response to the binding of extracellular signals, such as growth factors, RTKs (Receptor Tyrosine Kinases), TCR (T-Cell Receptors) and PMA (Phorbol-12 Myristate-13 Acetate).
Sicily Description. Sicily is Italy's largest island and the largest island in theMediterranean Sea. It's also a geographical and political region of Italy, famed for its beautiful beaches, cuisine, and fascinating history.
Republic in the Mediterranean Sea south of Sicily, made up of five small islands. Note: Malta, strategically located, has belonged to a succession of civilizations, including the ancient Greeks and the Roman Empire. In 1800, the British established control of Malta, which, since its independence in 1964, has continued to maintain close ties with Britain.