Retraction Note: Biol Res (2015) 48:65

https://doi.org/10.1186/s40659-015-0056-1

The Editor-in-Chief has retracted this article because, while the article states that the experimental procedures were reviewed and approved by an ethics committee, the authors have since confirmed that ethics approval was not in place at the time that this work was conducted.

Md. Abdullah Al Mamun did not explicitly state whether they agree or disagree with this retraction. The remaining authors did not respond to correspondence from the publisher about this retraction.