Synthetic Peptide Antibodies

[John D. Valentich]

We have recently started preparing polyclonal antibodies in rabbits against synthetic peptides
from annexins and phospholipase A2 activating protein (PLAP).   Peptides were 
conjugated to the carrier BSA.  We are wondering about the problem of 
antibodies generated against BSA reacting with serum albumin or albumin-like 
epitopes in other cellular proteins.  Questions:

1.  Is it likely (or inevitable) that our antisera will contain high titer 
antibodies against BSA? Could they be expected to cross react with other 
non-albumin cellular proteins?

2.  If so, is the best (or only?) solution to this problem affinity purification of annexin or PLAP 
antibodies from the antisera?

3.  What are other possible solutions?