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.Rabbits are used for polyclonal antibody production by MyBioSource. Rabbit antibodies are very stable and can be stored for several days at room temperature. MyBioSource adds sodium azide and glycerol to enhance the stability of the rabbit polyclonal antibodies. Anti-human, anti mouse antibodies to highly immunogenic selected peptide sequences are" monoclonal like" since the epitope to which they are directed is less than 35 amino acids long.
If you buy Antibodies supplied by MyBioSource 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.
This antibody needs to be stored at + 4°C in a fridge short term in a concentrated dilution. Freeze thaw will destroy a percentage in every cycle and should be avoided.
Polyclonals and antibodies