Figure 3. the clearance rates of oMWCNTs in amniotic, placenta, foetus and maternal blood at 1, 2, 6, 16 and 24 h post i.v.^99mTc-oMWCNTs.

(n = 5–8, 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).