Alessandra Quarta1,*, Nunzia Gallo2, Daniele Vergara3, Luca Salvatore2, Concetta Nobile1, Andrea Ragusa1,3 and Antonio Gaballo 1,*
1 CNR Nanotec, Institute of Nanotechnology, via Monteroni, 73100 Lecce, Italy2 Department of Engineering for Innovation, University of Salento, via Monteroni, 73100 Lecce, Italy3 Department of Biological and Environmental Sciences and Technologies, University of Salento, via Monteroni, 73100 Lecce, Italy* Correspondence: alessandra.quarta@nanotec.cnr.it (A.Q.); antonio.gaballo@nanotec.cnr.it (A.G.)Keywords: spheroids; hydrogel; collagen; mammary spheroids