antonio ivan leeuwenhoek invented the microscope in the middle of the 17th century. the scientific community was shocked by the fact that in one drop of water there are a huge number of microscopic organisms. one can only guess how amazed the researchers were when they realized that our body inhabits an average of 2 kg of microbacteria. facts, only the facts in our next material. and the creator of the microscope ivan leeuwenhoek in the 17th century was able to examine and write oral bacteria for the first time in 1828 the scientist christian ehrenberg introduces the term bacterium itself, when he studied e. coli bit bacteria without spores in the 19th century, it became clear to researchers that bacteria play an important role in health and the human condition, but it became possible to fully study the microbiota only after the discovery of gene sequencing technology by frederick, senker, a microbiologist. carl huese, divided seven microorganisms into archaic bacteria and eukaryotes of this classifications are used and now eukaryotes have a nucleus in bacteria. no a