Retraction notice to: An integrated protocol based on workflows of imaged capillary isoelectric focusing (icIEF) for in-depth protein heterogenous characterization: high-efficient fractionation and online mass spectrometry detection

This article has been retracted: please see Elsevier Policy on Article Withdrawal ( https://www.elsevier.com/about/policies/article-withdrawal ). This article has been retracted at the request of the authors. The manuscript was submitted before a final round of revision by the authors. As a result, not all authors had the opportunity to review the final manuscript and approve it, and there are a series of errors that should have been rectified prior to publication. These are: • Some figures do not contain the reference to the original source (permissions was obtained to reproduce the figures but this has not been properly represented). • Some sentences in the Introduction were taken verbatim from other sources while no reference was included to the original source. • The authors need to further supplement some data and discussion to improve the paper. The authors apologise for this error.