SURFACE PROTEIN (SPsA PROTEIN) OF STREPTOCOCCUS PNEUMONIAE, DELETED DERIVATIVES, EXPRESSION SYSTEM FOR SAID PROTEINS AND VACCINE SYSTEM WITH SAID PROTEINS

摘要

The invention relates to a novel surface protein (SPsA protein) of streptococcus pneumoniae, deleted derivatives of the surface protein, an expression system for the surface protein and its derivatives as well as a vaccine that uses them.