Royan International Twin Congress (Reproductive Biomedicine and Stem Cells Biology & Technology) has demonstrated to be one of the most successful experiences of scientific gathering in Iran and the Middle East since 2000. During these twenty years of active involvement in sharing and exchanging scientific knowledge and expertise with renowned scientific institutes and scientists, Royan Congress has helped to form many shared scientific projects and exchanges.

After the successful experience of the 23^rd Royan International Hybrid Congress (2022), Royan Congress intends to hold its 24^th Congress. In the past 3 years and sicne  the COVID 19 outbreak in 2020,  Royan Congress was held in virtual and hybrid modes, respectively.  Once again, the Scientific and Executive Board of Directors decided to hold the 24^th Royan International Congress in a hybrid  that combines “live” sessions with an “online” part from 29 August- 2 September, 2023.

19th Royan International Hybrid Congress on Stem Cell Biology and Technology(29 - 30 August 2023), 24th Royan International Hybrid Congress on Reproductive Biomedicine (31 August-1 September 2023), & 18^th Royan Seminar on Nursing & Midwifery (2 September 2023).

This year, Royan International Hybrid Congress's main objective is to preserve and enhance the connections of researchers and practitioners from all over the world despite the face to face challenges. The Hybrid Congress will cover main topics through highly scientific & extremely innovative online sessions.

We have the pleasure of extending our sincere welcome to you to attend Royan International Hybrid Twin Congress, 19^th Hybrid Congress on Stem Cell Biology and Technology, and 24^th Hybrid Congress on Reproductive Biomedicine, which definitely will be a memorable occasion for developing a lifelong friendship in the coming years.