Serum containing Immune-suppressive antibodies depresses the immunity of the person who receives immune-suppressive injection. The immune-suppressive serum is obtained from a host animal (like rabbit or horse) which has been injected with human lymphocytes.
Perhaps a serum whose effect is opposite in action to immune-suppressant can be produced. Say by injecting an immune-suppressive serum into a second host animal. After the immunity of the second host animal produces antibodies that are against immune-suppression the serum is then harvested for use.
If action of immune-suppressant can be reversed, would this reversal be immune-enhancing or what?