Which institute did Ivan Pavlov use to develop precise surgical methods for animal research?

Ivan Pavlov developed his precise surgical methods for animal research at the Institute of Experimental Medicine.

At this facility, Pavlov implemented rigorous surgical procedures for animals, emphasizing strict postoperative care and maintaining high standards for their health. These methods were instrumental in his study of digestion, most notably his development of a "miniature stomach" operation that allowed him to observe gastrointestinal secretions while preserving the vagal nerve supply.12