[nonbel]

Here is another. At first you may think they show successful insertion of GFP, but it turns out no! Instead all that needed to happen was mutation of an early stop codon: http://www.ncbi.nlm.nih.gov/pmc/articles/PMC3712628/

That is why I am asking others to provide their own references. The papers I have read do not seem capable of distinguishing between modification vs selection after careful inspection.