Inappropriate mega-correction in Nature

Nature Publishing Group covered up alleged scientific misconduct such as mega-image manipulation by accepting mega-correction many times.

Examples of inappropriate mega-correction in Nature 1) Shigeaki Kato's case:http://katolab-imagefraud.blogspot.com/2012/01/dna-demethylation-in-hormone-induced.html  2) Issei Komuro's case:http://isseikomuro.blogspot.com/2013/05/nature-2008-jul-174547202345-9.html 


Beside, Nature Group replaced misused image data with new one without any notice in the Nature medicine article. http://isseikomuro.blogspot.com/2013/05/nat-med-2009-sep1591082-7.html …

Can Nature Publishing Group, which is tolerant of misconduct, properly deal with issues in Dr. Obokata's papers on STAP cells?