I've used the 4G10 from UBI, which works well, but working as well for
a MUCH lower price is the PY20 from Transduction Laboratories,
1-800-227-4063, 2134 Nicholasville Rd, Lexington, KY 40503.
PY20 unconjugated 1 mg $100 (also available conjugated to HRP,
agarose, or in a recombinant form called RC20 with lower non-specific
binding, cconjugated to HRP or alk phos).
