You may check a free antibody database at labome.com. In particular, for currently available Lamin B antibodies, you can try the following link: http://www.labome.com/review/gene/human/lamin-B-antibody.html. Santa Cruz Biotechnology has goat polyclonal M-20 (sc-6217, ref.: Ercilla et al., Nucleic Acids Res 2016), rabbit polyclonal H-90 (sc-20682, ref.: Stalekar et al., Neuroscience 2015) and mouse monoclonal C-5 (sc-365962, ref.: Pagan et al., Nat Cell Biol 2015) antibodies to Lamin B, suitable for WB on human samples. Also, Abcam provides rabbit polyclonal antibody ab16048 (ref.: Fahrenkrog et al., PLos One 2016). In addition, Invitrogen has mouse monoclonal antibody L-5 (33-2000, ref.: Kim et al., Sci Rep 2014).