Table 3.

Assignments of rats in micro CT measurements and distribution of AgNPs in the ear post-intratympanic administration

AgNPs conc	370.7 mM	37.1 mM	1.85 mM
Time points	4 h*	24 h*	4 h*	7 d2*	7 d*
Locations of AgNPs in the ear	ME, OC, SA, RWM, OW, ET, ST	ME, OC, SA, RWM, OW, ET, ST	ND	ME	ND

*Two rats were assigned into each group. conc: concentration; ET: Eustachian tube; ME: middle ear; ND: not detected; OC: ossicular chain; OW: oval window; RWM: round window membrane; SA: stapes artery; ST: scala tympani.