Fig. 2
![Fig. 2](http://media.springernature.com/full/springer-static/image/art%3A10.1186%2Fs12881-017-0434-3/MediaObjects/12881_2017_434_Fig2_HTML.gif)
PA hormone distribution in methylated and non-methylated STAT3 gene groups. PRL – prolactin, IGF-1 – insulin-like grow factor 1, GH – growth hormone, ACTH – adrenocorticotropic hormone, multiple – PAs secreting more than one hormone, NS – non-secreting PAs