The Editor-in-Chief has retracted this article [1] because Figure 3a overlaps with canine spectra kc 3 intranasal single dose Figure 2 in [2].An investigation by Zhengzhou University has confirmed this.The data reported in this article are therefore unreliable.There is product also considerable text overlap with a previously published article [3].
Guoqiang Zhao does not agree with this retraction.The other authors have not responded to correspondence from the editor about this retraction.