巴斯德研究院
In 1946 a new scientific cooperation agreement was signed between Pasteur Institute of Paris and Pasteur Institute of Iran, based on which Pasteur Institute of Iran became financially and administratively independent. At this time, Dr. Marcel Baltazard came to Tehran as the fourth and last French director. Dr. Baltazard was the director of Pasteur Institute of Iran until 1961 and changed various structures and activities of Pasteur Institute of Iran. After that, he continued to serve as a scientific advisor to Pasteur Institute of Iran until 1966.