A study of the use of sound waves by bats led to this discovery

This son of a famous singer used a bellows to blow air through the larynges of animals to study how pitch was achieved.

Which surgery professor, experimenting with chloroform, was found unconscious along with his entire lab staff because a container of chloroform was accidentally knocked over?

The first human kidney transplant was performed between two identical twins by

Immunosuppression was a major issue in the first kidney transplant performed by Joseph Murray on Richard Herrick

Chadwick believed that bad odors were responsible for disease in London. 

The first attempt to organize medical practitioners into a Guild was made in

Which of these is NOT among the four elements that make up nature according to Empedocles?

The development of medicine in the ancient world was accelerated by

Preimplantation genetic diagnosis accomplishes all of the following, EXCEPT