“…Nanocellulose, mainly BNC, is applied in different forms to humans, such as skin substitute (Khan et al, 2018), wound dressing materials (Sajjad et al, 2020), synthetic blood vessels (Scherner et al, 2014), artificial cornea (Wang et al, 2010), bone and cartilage (Basu et al, 2018), synthetic heart valves (Mohammadi, 2011), gastrointestinal tract (Lamboni et al, 2019), tympanic membrane (Kim et al, 2013), dental implants (Jinga et al, 2014), neural implants (Yang et al, 2017), urinary conduit replacement (Huang et al, 2015), contact lenses (Cavicchioli et al, 2015), and several others, and therefore, it is necessary to identify the associated potential health risks (Endes et al, 2016). Several studies have reported brown lung, alveo-bronchiolitis, fibrosis, and granulomatous inflammation in vivo following the exposure to cellulose (Tátrai et al, 1995).…”