DPABH-22187 recognizes ~67 kDa of Human ER without a phosphorylation site of Ser 167. It does not cross react to phosphorylated peptide.Nuclear hormone receptor. The steroid hormones and their receptors are involved in the regulation of eukaryotic gene expression and affect cellular proliferation and differentiation in target tissues. Can activate the transcriptional activity of TFF1.Shipped at 4°C. Upon delivery aliquot and store at -20°C or -80°C. Avoid repeated freeze / thaw cycles. *   http://www.creative-diagnostics.com/Anti-ESR1-PAb-196402-147.htm