Creative Biolabs has scFv fragment antibodies against EpCam, CD19, CD20 and others. They also also offer a number of VHH nanobodies, though don't appear to have any against your targets just now. Here's our profile of them: https://www.linscottsdirectory.com/suppliers/creative-biolabs

BioLegend and SynapticSystems also produce nanobodies, so they may be worth checking also.

Good luck.

yeah , i checked that website but i didn't find my desired nanobody. I prefer to find a nanobody which it has just developed. I would like to have a collaboration with someone who gives me a nanobody.

Ablynx. They may have some VHH nano body targeting the surface receptor of tumor. And some of them are used in clinical tests.

Hi Shafieeh, I work with a South African based company called Afrobodies (www.afrobodies.com) that specialises in the production on recombinant alpaca antibodies (nanobodies) give us a shout if you are still looking for some specific nanobodies and we will see what we can do.

https://www.sciencedirect.com/science/article/abs/pii/S0161589020305265?via%3Dihub