Welcome to the international Brest-Bretagne airport, the best solution to come to the laboratory: daily several flights between Paris and Brest.
Further informations : https://www.brest.aeroport.bzh/accueil
Every day you have TGV lines from Paris to Brest.
Further informations : https://www.sncf.com/en
Since the train station you have two bus lines n° 1 direction "Provence" or n° 2 direction "Hopital Cavale" and you stop to "Universités".
Further informations : https://www.bibus.fr/en
Since Rennes use the RN12 road, or the RN165 road if you come from Vannes.