Animals 10 Mice 10 Spheroids, Cellular 10 mouse 10 multicellular spheroid 10 animal cell 8 cell proliferation 8 controlled study 8 in vitro study 8 nonhuman 8 priority journal 8 Cell Line, Tumor 6 animal 6 phenotype 6 Adenocarcinoma 4 Animalia 4 Antiviral Agents 4 Article 4 Bystander Effect 4 Cell Division 4 Drug Resistance 4 Ganciclovir 4 Gene Therapy 4 Herpes simplex virus 4 Lipofection 4 Mammary Neoplasms, Animal 4 Melanoma 4 Mice, Inbred BALB C 4 Models, Biological 4 Murinae 4