Modern art historians place it instead at the end of the artist's life, proposing collaborators for the non-autograph panels such as Domenico di Michelino (Berenson), the Master of Cell 2 (Pope-Hennessy), Zanobi Strozzi and Benozzo Gozzoli (Salmi). The autograph panels include "Annunciation", "Nativity", "Flight into Egypt" and "Massacre of the Innocents". The cycle represents Christ's childhood, preaching, passion, death and resurrection: