The original cell theory is one of the most significant and foundational theories in the field of biology. It states that all living organisms are made up of cells, which are the basic unit of life.

However, this theory did not come about overnight. It was the result of years of scientific experimentation and observation.

The experiment that led to the development of the original cell theory can be traced back to the late 17th century. At this time, a Dutch scientist named Antonie van Leeuwenhoek had developed a powerful microscope that allowed him to see tiny organisms that were previously invisible to the naked eye. He was able to observe various living things, including bacteria and yeast.

However, it wasn’t until the mid-19th century that two German scientists, Matthias Jakob Schleiden and Theodor Schwann, used microscopes to study plant and animal tissues respectively. They independently came up with similar conclusions – all living things are composed of cells.

Schleiden’s work focused on plants, specifically looking at plant tissues under a microscope. He discovered that all plant tissues were made up of cells – a finding which led him to theorize that all plants were composed entirely of cells.

Meanwhile, Schwann was studying animal tissues and making similar observations. He found that animal tissues also consisted of individual cells – leading him to conclude that all animals were likewise made up entirely of cells.

It wasn’t until later when Rudolf Virchow added his own observation: all cells come from pre-existing cells by cell division; thus completing what we now know as “The Cell Theory”.

In conclusion, The original cell theory was developed from years of scientific experimentation and observation. It took several scientists working independently over many decades to arrive at this fundamental understanding that all living things are made up of individual units called cells. Today, this theory is still considered one of the cornerstones in biology and continues to inform our understanding of life on earth.