Immunosurgery
![Immunosurgery of a blastocyst. Antibodies are added that attach to the outermost layer of cells, which on a blastocyst is the trophoblast. After removing any unbound antibodies and adding complement, the trophoblast cells are destroyed, leaving only the inner cell mass.](/Images/godic/202502/09/Blastocyst_immunosurgery2505.png")
Immunosurgery is a method of removing an external cell layer of an object. Immunosurgery is to expose the specimen to a solution containing antibodies against the object, remove that solution and subsequently expose the object to complement. When only the external layer is marked with antibodies, these cells are the only ones to be destroyed by the complement.