Warren Steinbring did something that then had a fantastic influence on my career. For reasons unknown to me, he decided to take a course at the Mary Jane Bassett Hospital in New York State. But the first course in cell culture... At that time it was called tissue culture, which to some... large extent was a misnomer, because you actually don't culture tissues, that's rarely done, you culture... cells, that is, the cells that compose tissues. So Warren took this course and by this time Frank Kapral and I were disgusted with the primitive laboratory conditions that we had. And they were primitive, the building was from the late 18^th... 19^th century and the laboratory facilities were crude, almost antique. And since we had to work... work using what's called aseptic technique, that is, to work with the organism of interest and to prevent the contamination of that organism in the vessels that one was using with other microorganisms, so you had to know what's called sterile technique, how to work with a Bunsen burner, to sterilise instruments and the mouths of the containers, and so that was all learned. But in these primitive conditions that we had in this laboratory, it was very difficult and we needed to redesign the laboratory such that it would improve our aseptic technique. This happened to... We happened to realise this at the beginning of our first summer as students, while Warren was away taking this course in cell culture.