New: Verb conjugations - all tenses, all adjective , plural forms; accusative, dative and genitive, optimized search with word stem.
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a regulatory substance produced in an organism and transported in tissue fluids such as blood to stimulate specific cells or tissues into action
مادة منظمة في العضو، تفرزها غدة صماء ويتم نقلها عن طريق الدم.