@arrihan : please check your sources.

Levinhook in 1591 where he studied the organs in the human body and how to install arteries and tissues

What do you mean by how to install arteries and tissues?; Do you mean this?

• He was also the first to document microscopic observations of muscle fibers, bacteria, spermatozoa, and blood flow in capillaries.

Antonie Philips van Leeuwenhoek ; 24 October 1632 – 26 August 1723) Source : Wikipedia

• Mitochondrion is an important part of the cell that you are missing.