OMICS Group International is an open access online publishing group which has 700+ peer-reviewed journals, organizes 3000+ International Scientific Conferences per year, have around 50,000+ editorial board members and 1000+ Scientific associations. Medical Journals provide a platform for outstanding research around the globe in the field of medicine. These scholarly journals aim to contribute to the progress and application of scientific discoveries, by providing free access to the research information.
Cells are the basic structural and functional and unit of all known living organisms and are referred to as building blocks of life. Organisms can be classified as unicellular and multicellular on the basis of number of cells. Organisms having single cell are known as Unicellular and those with multiple number of cells are known as multicellular organisms. In 1665 Robert Hooke discovered the cell. Schleiden and Schwann, were the first to develop the cell theory in 1839 which states that all organisms are composed of one or more cells, and all cells emerge from pre existing cells, vital functions of an organism occur within cells and all cells contain the hereditary information necessary for regulating cell functions and for transmitting information to the next generation. Cells evolved on Earth around 3.5 billion years ago.
Last date updated on July, 2014