“…In the case of HA, the use of human keratinocytes (La Gatta et al, 2016 ), HaCaT (Sacco et al, 2016 ; Sun et al, 2017 ); murine cell lines [NIH-3T3 (Sigen et al, 2018 ), or L929 (Zamboni et al, 2017 )] have been reported. It is advisable to employ cell type homologous with the tissue/organ concerns for the specific application, i.e., endothelial cells for testing stents (Choi et al, 2016 ; Hauser et al, 2017 ), human dermal fibroblasts and epidermal keratinocytes for wound healing (D'Agostino et al, 2015 ), adipose-derived stem cells for dermal fillers or gels (Guo et al, 2017 ; Stellavato et al, 2017 ) and chondrocytes for cartilage knee repair (Brittberg, 2014 ).…”