Biopharma happenings, including deals and partnerships, grants, preclinical data and other news in brief: Affyxell, Avacta, Celltrion Cero, Cerus, Daewoong, Erytech, Indivior, Lotus, Neurogastrx, Novavax, Nrx, Pherecydes, Phoenix, Rani, Selvita, Synlogic, Teva, Vaxequity.