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Retraction Note to: A Comparative Study of the Toxicity of Polyethylene Glycol–Coated Cobalt Ferrite Nanospheres and Nanoparticles

The Original Article was published on 19 December 2019

Retraction Note to: Nanoscale Research Letters (2019) 14:386

The authors have retracted their article [1] because a number of the panels in Figs. 6 and 7 overlap with panels in figures in previously published articles [2, 3], specifically:

  • Figure 6 Liver control [1] appears identical to Fig. 10 liver control [2]

  • Figure 6 Lung PEG-NPs [1] appears identical to Fig. 10 lung PEG-CF [2]

  • Figure 6 Spleen control [1] appears identical to Fig. 10 spleen control [2]

  • Figure 6 Spleen treatment [1] appears identical to Fig. 10 spleen treatment [2]

  • Figure 7A [1] appears to be identical but in a different order to Fig. 6A all panels [3]

  • Figure 7B [1] appears identical to Fig. 6B [3]

  • Figure 7D [1] appears identical to Fig. 6D [3] using a different scale

  • Figure 7C [1] appears identical to Fig. 6E [3] using a different scale

All authors agree with this retraction.


  1. Akhtar S, Khan Q, Anwar S et al (2019) A comparative study of the toxicity of polyethylene glycol-coated cobalt ferrite nanospheres and nanoparticles. Nanoscale Res Lett 14:386

    CAS  Article  Google Scholar 

  2. Akhtar S, An W, Niu X et al (2018) Toxicity of PEG-Coated CoFe2O4 nanoparticles with treatment effect of curcumin. Nanoscale Res Lett 13:52

    Article  Google Scholar 

  3. An W et al (2018) Ocular toxicity of reduced graphene oxide or graphene oxide exposure in mouse eyes. Exp Eye Res 174:59–69

    CAS  Article  Google Scholar 

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Correspondence to Lan Gao.

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Akhtar, S., Khan, Q., Anwar, S. et al. Retraction Note to: A Comparative Study of the Toxicity of Polyethylene Glycol–Coated Cobalt Ferrite Nanospheres and Nanoparticles. Nanoscale Res Lett 15, 208 (2020).

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