EXHIBIT 21
                                     
                      SUBSIDIARIES OF THE REGISTRANT
                                     
                                     

                        Atlantic Antibodies, Inc.
                        Incorporated in the State of Delaware
                        d.b.a. Atlantic Antibodies, Inc.
                        
                        
                        INCSTAR UK Ltd.
                        Incorporated in the United Kingdom
                        d.b.a. INCSTAR Limited
                        
                        
                        Immuno Nuclear Export, Limited
                        Incorporated in Jamaica
                        d.b.a. Immuno Nuclear Export Limited