How did Friedrich Gustav Jacob Henle influence Robert Koch's ideas about infectious disease?

Friedrich Gustav Jacob Henle was a pivotal influence on Robert Koch during Koch's time as a student at the University of Göttingen.1

Henle was an early proponent of the microorganism theory of contagion, having published a landmark paper in 1840 that argued infectious diseases were caused by living, parasitic microscopic organisms. While this theory was unpopular at the time, Henle’s conviction that these living agents were responsible for disease provided the foundational framework for Koch’s later work. Koch ultimately brought Henle’s belief in the germ theory to fruition through his own rigorous laboratory investigations, providing the first convincing proof of the causal relationship between specific microorganisms and particular diseases.12