Effects of MAPbI3 and MASnI3 on the development of: (a) C. elegans, L3-stage larvae were inoculated into microfluidic device in different chambers where regular bacterial food containing or not  MAPbI3 or MASnI3 was sequentially injected, the development of the larvae was assessed until old adult stage. All the histograms show an average of at least 3 independent repeats (each condition in triplicate). Bars are means ± S.D. One-way ANOVA test followed by a Tukey-Kramer post-hoc test were performed (non-exposed vs MAPbI3 or MASnI3 exposed flies or worms), *p<0.05, **p<0.005  and ***<0.0005.