<Ol> <Li> All living organisms are composed of one or more cells . </Li> <Li> The cell is the basic unit of structure and organization in organisms . </Li> <Li> Cells arise from pre-existing cells . </Li> </Ol> <Li> All living organisms are composed of one or more cells . </Li> <Li> The cell is the basic unit of structure and organization in organisms . </Li> <Li> Cells arise from pre-existing cells . </Li>

Who put forward the cell theory what are its salient features