Science has long been considered a major part of its living cell membranes.This conclusion Gryui N. and M. Malpighi in 1671 in the study of plant anatomy, when they found the smallest cell.

In 1674 A. Leeuwenhoek studied under a microscope the cells of living organisms.But the level of knowledge at the time does not allow us to assert that unraveled the physiology of the cell.Continue to believe that the most important part of the cell - its shell.

Only two hundred years as the improvement of the microscope and study of the art of such small objects able to amass sufficient knowledge to again come to grips with the study of living cells.It's time to start looking at is not just a single cell is an integrated system, and a m
ore complete organization of organic life.
It is against this background that the English botanist Robert Brown in 1883, was able to announce a new, previously unknown components of living cells: its core.

Around the same time, the German botanist M. Schleiden has come to an important conclusion about the integrity of the cellular organization of the plant.In 1838, zoologist T. Schwann explores zoological facilities, as well as by comparing the data of predecessors, it comes to the most important achievements of theoretical biology: the cell is the elementary unit of the structure and development of absolutely all living organisms, whether plant or animal.This theory was subsequently tested in practice many times.

Soon German physician Virchow concluded, and then proved that the cell is living there.In addition, the entire scientific world was shaken by his main discovery of the cells, there is the main component - the core.

Academician of the Russian Academy of Sciences Karl Baer opens the egg in mammals, and stipulates that everything the body begins to develop from a single cell.Thus, the opening Baer proved that the cell structure is not only a unit, but the unit of all living organisms.

further study of the structure of cells, as well as the improvement of microscopes (creation of an electron microscope), made it possible to look more deeply into the mystery of the cells, to study its complex structure and to begin the study of processes occurring in the cells.

Today, it can be argued that the cell theory is fully confirmed, that each cell has a membrane structure, and the most important part of it is the nucleus, the cell division and multiply.In addition, it can be argued that the cellular structure - a single certificate of origin of animals and plants.It

cell theory was the basis of cytology, the science of the structure, composition and unit cell, and cytogenetics - the science that describes the transmission of hereditary characteristics at the cellular level.