"... 1967 was a decisive year for my work in the world of bees. It was on the third of June that my intuition led me to learn about and apply the antibiotic-like and physiologically defensive properties of Propolis. Since then my thirst for knowledge has been focussed almost exclusively on the topic of Propolis. I am firmly convinced that this substance, of which I had previously not known, possesses a strength and concentration against which no virus or bacteria can build up a resistance. The county administration's annual summer excursion took place on that third of June. Actually, I should have stayed home because I had bad sore throat. But as a boss, one has certain responsibilities, so I went along on the excursion. As a consequence, that evening I had a heavy fever of over 40 degrees. I could not sleep that night, and in my feverish delirium I remembered the Propolis that I had collected for so many years. I staggered to the cabinet in which I kept it, took out a large portion, crushed it to powder with a pestle and mortar, and dissolved it in warm water. I poured in the liquid through a coffee filter. I gurgled the brew, which was as yellow as tea, a few times. I drank the rest without thinking any further about it. I then swayed to my bed and fell asleep. On the following day, all of my ailments had simply disappeared. ..."

The same year Lund Aagaard decided to dedicate all of his efforts to researching the putty resin.