BINDING OF PEPSIN-TREATED HUMAN IMMUNOGLOBULIN TO THE BACTERIAL CELL SURFACE: AN IMMUNOCYTOCHEMICAL STUDY

Abstract

A fibrous substance was consistently observed on the cell surface of bacteria, K. pneumoniae and S. aureus, after incubation with a pepsin-treated human immunoglobulin. Chemical component of the fibrous substance was studied by an immunocytochemical technique. The major component of the fibrous substance was demonstrated to be human immunoglobulin.