If you buy Antibodies supplied by EpiGentek they should be stored frozen at - 24°C for long term storage and for short term at + 5°C.HRP conjugates are often primary rabbit polyclonal antibodies couples to the enzyme horseradish peroxidase (HRP), found in the roots of horseradish. Also monoclonal HRP conjugates are often used for Western Blot.
Polyclonals and antibodies
Polyclonals can be used for Western blot, immunohistochemistry on frozen slices or parrafin fixed tissues. The advantage is that there are more epitopes available in a polyclonal antiserum to detect the proteins than in monoclonal sera.