Anti-Progesterone Receptor pS190 (Mouse) antibody is suitable for use in Western Blot and IHC. Expect a band of approximately 90 kDa in size for PR-A isoform and approximately 120 kDa in size for the PR-B isoform phosphorylated at Ser190 in Western Blotting in the appropriate cell lysate or extract. Specific conditions for reactivity should be optimized by the end user.