spectacle (1) région (1) protéine (1) système de protection (1) agent pathogène (1) modèle (1) gène (1) ADN (1) Deletion (1) Case (1) Protein-tyrosine kinase (1) Origin (1) Protection (1) Work (1) Streptococcus pneumoniae (1) Streptococcus (1) Segregation (1) Life--Origin (1) Grammar, Comparative and general--Case (1) Example (1) DNA (1) Cells (1) Cell division (1) Case (1) Biological models (1) Bacteria (1) Addition (1) Origin (1) Protection (1) fille (1)