Cell Theory

Microscopes discovery

1632

1632-1723 when microorganisms were revealed by Antoni van Leeuwenhoek that the particles found were living organisms. Later know as cells or pores. This invention is the only reason any of this feasible.

Animal and plant observance

1730

1730-1858 where scientist observed the nucleus in plants and animals and made to be an essential constituent of living cells. This discovery help with later discoveries.

First Official Formulations

1804

Matthias Jakob Schleiden said that plants is composed of cells or their products and Theodor Schwann made a similar synopsis with animal tissue. This is a core discovery in the cell theory that stands today. 1804-1882

Upgrades to a new discovery

1830

1830 Technical improvements were made to microscopes for better observations and improvements were made to tissue preservation. This allowed the cells to be look at more thoroughly.

Trio formed

1850

1815-1905 Robert Remak, Rudolf Virchow, and Albert Kolliker debunked the Free cell formation theory by showing cells are formed through scission of pre-existing cells. This as will was a core base for cell theory.

digging deeper

1870

1870 Microtone technique improved microscopy identifying organelles and different terms.

Unity

1882

1836- 1921 Wilhelm Waldeyer established that each half chromosome moves to the opposite pole of
the mitotic nucleus. This process was also
observed in plants, providing further evidence of the deep unity of the living world

new looks

1896

(1820–1896) Kölliker’ proposed that in all of the central nervous system, nerve cells established anastomoses with each other through a network formed by the minute branching of their dendrites. According to this concept, the network or reticulum was an essential element of grey matter that provided a system for anatomical and functional communications, a protoplasmic continuum from which nerve fibers originated2

Neuron Theory

1900

nervous tissue is softness and fragility, it was difficult to handle and susceptible to deterioration. But it was its structural complexity that prevented a simple reduction to models derived from the cell theory. Nerve-cell bodies, nervous prolongations and nervous
fibers were observed in the first half of the
nineteenth century.

last triumph

2000

spontaneous generation theory I let the silver
nitrate react with pieces of brain hardened
in potassium dichromate. I have obtained
magnificent results and hope to do even
better in the future.” This reaction provided, for the first time, a full view of a single nerve cell and its processes, which could
be followed and analyzed even when they
were at a great distance from the cell body. this is still being investigated