During World War I Fleming continued his investigations into antibacterial substances. Testing the nasal mucus from a patient with a heavy cold, he found that it had an inhibitory effect on bacterial growth. This was the first recorded discovery of lysozyme, an enzyme present in many secretions including: tears, saliva, skin, hair, nails and mucus. Unfortunately, the enzyme was only effective against small counts of harmless bacteria, and therefore had little therapeutic potential. (28 jul 1914 año – 11 nov 1918 año)
Añadido al timeline:
fecha:
28 jul 1914 año
11 nov 1918 año
~ 4 years and 3 months
