Assume that, I am using magnetic bead that is modified with CD9 antibody and captured the exosome. Now I want to collect only specifically captured exosome leaving the magnetic bead/antibody complex.
in many cases, capture on magnetic bead is irreversible. you have to lyse the entity (exosome or cell or whatever) for the end point analysis, or use it with beads for whatever is your downstream experiment. But some antibodies enable target release, upon use of certain buffers. Alternatively, you can gently digest the proteins and release the exosomes (with small chunks of Abs on their surface)