Google today celebrated the memory of German physician and microbiologist Robert Koch with a doodle.

Dr. Koch was awarded the Nobel for his “Investigations and discoveries in relation to tuberculosis”.

Born on December 11, 1843, Dr. Koch studied medicine at the University of Göttingen before working as a District Medical Officer at Wollstein.

In the course of his career, he put forward a series of ‘Koch’s postulates’ that set out guidelines and principles linking microorganisms with specific diseases.

Dr. Koch had initially used potato slices as the media to isolate pure bacterial cells to help with his research until his assistant, Julius Petri, invented the Petri dish, a small cylindrical dish used to culture bacterial cells.

Dr. Koch passed away on May 27, 1910 at the age of 66.

Robert Koch