TiO2 NPs	Nanoparticles Titanium Dioxide Nanoparticles
EFSA	European Food Safety Authority
WoS	Web of Science
CNKI	China National Knowledge Infrastructure
T DNA%	the percentage of DNA in tail
TL	tail length
OTM	olive tail moment
MF	mutation frequency
MN	micronucleus
CA	chromosomal aberrations
TRAM	toxicological data reliability assessment method
CDC	Center for Disease Control and Prevention
SMD	standardized mean difference
CI	confidence interval
ROS	reactive oxygen species
DDR	DNA damage response