Binders is an old name for antibodies.
camel binders is still a name used in Brussel Belgium where phage display for camel antibodies was discovered and patented.
Ablynx makes monoclonal humanized E. coli recombinant antibodies from Alpaca.
They only needed 1 alpaca to make the library.
The smaller antibodies are much easier to recombine and are much better for biosimilar production.
Binder med is still a companie name that whitnesses from the time antibodies where called binders in 1995.