Cell theory has several parts. One part of cell theory determined that microorganisms, invisible to the naked eye, are responsible for causing disease. This was known as germ theory. Who is credited with proving germ theory?
The germ theory began in the mid-nineteenth century where Louis Pasteur announced an idea where germs are causing infectious problems, Pasteur years later discovers that these germs can be introduced in small doses to healthy patients and create antibodies and names them Vaccines.
