Comput. methods programs biomed. Comput. methods programs biomed. SpheroidJ: An Open-Source Set of Tools for Spheroid Segmentation Lacalle D. Castro-Abril H.A. Randelovic T. Domínguez C. Heras J. Mata E. Mata G. Méndez Y. Pascual V. Ochoa I. Universidad de Zaragoza 2021 research-article