I suggest checking an antibody database at Labome.com. For antibodies to STAT-6, you can use this link: http://www.labome.com/review/gene/human/STAT6-antibody.html. In addition to several antibodies produced by Santa Cruz, Abcam offers rabbit polyclonal ab28829, reference: Menter et al., Hematol Oncol 2016) and rabbit monoclonal antibodies for IHC ab32520, reference: Vogels et al. Diagn Pathol 2014) for detection of human STAT-6 by IHC or WB. Also, Cell Signaling Technology has rabbit polyclonal anti-STAT-6 antibody 9361S (reference: Uto-Konomi et al., PLoS One 2012) for IHC and WB and rabbit monoclonal anti-STAT-6 antibody 9364S (reference: Rochman et al., Mucosal Immunol 2015) for WB.
Hi Valeria. I can also recommend checking www.pAbmAbs.com if you are looking for reliable antibodies. Here, other scientists rate the antibodies they use in their research-i think this is a very valuable input!