What is the correct order for the history of cell research? koch studies tuberculosis > schwann studies cell division > hooke first uses a microscope schwann studies cell division > hooke first uses a microscope > koch studies tuberculosis hooke first uses a microscope > schwann studies cell division > koch studies tuberculosis hooke first uses a microscope > koch studies tuberculosis > schwann studies cell division

My answer would be: 
Hooke first uses a microscope > Schwann studies cell division > Koch studies tuberculosis

1665 - With the use of a microscope, Robert Hooke discovered and named the cell. He was studying a cork and saw a pattern that he relates with a cellula or small rooms that were inhibited by monks during that time. Thus, the name "cellular".

1838 - Theodor Schwann verified the existence of cells and has also traced the development of tissues from its early embryo stages to its adult stage.

1882 - Robert Koch, a German doctor, successfully isolated Mycobacterium tuberculosis, a causative agent of tuberculosis. 

The correct order in which the events of cell research occured is the third option. The events are highlighted below:

1. In 1665, Robert Hooke,  an English natural Philosopher, first used a microscope
2. In 1838, Theodor Schwann, a German Physiologist, studied cell division.
3. In 1882, Robert Koch, a German physician and microbiologist, studied tuberculosis.

Well a pediatrician is a children’s doctor and a obstetrician is a doctor that delivers babies and cares for pregnant women.

So that you don't get baby's but also prevents stis such as hiv