Table 15.

Circulation time of nanoparticles in cancer therapy.

Nanoparticle	Circulation Time	References
Gold NPs	More than 24 h after accumulation	[194]
Silver NPs	90 days; in pregnant female mice, 1 to 4 days	[195]
Zinc oxide NPs	24 h after administration	[8]
Iron NPs	24 -36 h after administration	[196]