Abstract
Disulphide-linked immunosorbents prepared from rabbit antisera against extracts of uninfected HeLa (ERK) cells specifically removed host-cell antigens from extracts of cells which had been infected with vaccinia virus. Similarly, disulphide-linked immunosorbents prepared from rabbit anti-vaccinia sera specifically removed vaccinia-specific antigens from infected cell extracts. Disulphide-linked preparations derived from unrelated sera adsorbed neither host nor virus-specific antigens.