The IBS 2019 Scientific Day took place on the EPN campus on June 13 with about 200 participants. In addition to plenary lectures, the 2019 programme included Duo presentations, ERC/ANR presentations in 180s, a presentation by Diego Gauto (Laureate of the IBS Young Researcher Publication Prize 2018/2019) and a lecture by an invited speaker. A poster session by 2nd year doctoral and post-doctoral students was also organized after lunch. On this occasion, the Best Poster Award was given to Guillaume Fouet (IRPAS group) for his work on ’C1q interaction with the immunoglobulin-like receptor LAIR-1’. Finally, the day ended with a friendly dinner on the lawns in front of the IBS.