Back نظرية الخلية Arabic Hüceyrə nəzəriyyəsi Azerbaijani Клетъчна теория Bulgarian কোষতত্ত্ব Bengali/Bangla Teoria cel·lular Catalan تیۆریی خانە CKB Buněčná teorie Czech Пайрăм теорийĕ CV Zelltheorie German Κυτταρική θεωρία Greek
Cell theory is the historic scientific theory, now accepted by everyone, that living organisms are made up of cells. Cells are the basic unit of structure in all organisms and the basic unit of reproduction.