Original sentence: In the twenty years that Knöll led ZIMET, the institute became one of the largest in the GDR with over 1000 employees, and engaged in research and development in antibiotics, biotechnolgy, experimental therapy, medical and environ microbiology, microbial genetics, and steroids
Edited sentence: In the twenty years that Knöll led ZIMET, the institute became one of the largest in the GDR with over 1000 employees, and engaged in research and development in antibiotics, biotechnology, experimental therapy, medical and environ microbiology, microbial genetics, and steroids