The term sickle cell disease (SCD) describes a group of inherited red blood cell disorders. People with SCD have abnormal hemoglobin, called hemoglobin S or sickle hemoglobin, in their red blood cells.
2 v, [kÉntraktâ²] , to make such an agreement or promise. contractual, adj. A written, dated and signed agreement between two or more parties, which sets out any arrangements on delegation and distribution of tasks and obligations, and, if appropriate, on financial matters. A clinical trial protocol may serve as the basis for a contract. contract.
contract - a binding agreement between two or more persons that is enforceable by law. 1  clause, article - a separate section of a legal document (as a statute or contract or will) 2  arbitration clause - a clause in a contract providing for arbitration of disputes arising under the contract.