感谢大会组委会邀请我出席会议。1990年正是青霉素酶发现五十周年,而我正是当年从事过该项工作尚健在的人之一。但是,如今离我积极从事这方面研究已有十年,故在此我尽力回忆一下这项研究的重要方面,它是如何从唯小的起端而发展起来的。让我追忆到1940年。当年Chain和我为什么要顺便看看大肠 Thanks to the organizing committee for inviting me to attend the meeting. 1990 marks the fiftieth anniversary of the discovery of penicillinase, and I was one of those people who had been working on that work for the past year. However, since I have actively engaged in this field for a decade now, I hereby try my best to recall the important aspect of this study and how it has developed from its youngest beginning. Let me recall to 1940. Then Chain and I have to look at the colon