Figure 4. the clearance rates of oMWCNTs in heart, liver and lung of foetus and foetus at 1, 2, 6, 16 and 24 h post i.v. ^99mTc-oMWCNTs.

(n = 8–10, all data represent means + s.e.m; the different alphabets is *p < 0.05 compared with each other in different time in the same organization by ANOVA or K-W test for foetus-heart).