POSTER: S.-M. Iordache, A. M. I. Trefilov, A.- M. Iordache, A. V. Filip, I. C.Vasiliu, M. Elisa, I. Chilibon, S. Caramizoiu, C. E. A. Grigorescu, Serotonin detection in artificial plasma based on modified graphene-aniline electrochemical sensors, 20th International Conference on Nanosciences & Nanotechnologies 4-7 Iulie 2023, Thessaloniki, Grecia (NN23) (https://www.nanotexnology.com/2023/ )