Respiratory infections (1) Genes (1) Minors (1) Winter (1) Streptococcus pneumoniae (1) Penicillin (1) Months (1) Microbiology--Technique (1) Microbial sensitivity tests (1) Medicine (1) Identification (1) Erythromycin (1) Antibiotics (1) Aparato respiratorio--Infecciones (1) Microbiología--Técnica (1) Eritromicina (1) Streptococcus pneumoniae (1) Antibiogramas (1) Meses (1) Identificación (1) Penicilina (1) Invierno (1) Genes (1) Menores (1) Antibióticos (1) Medicina (1) identification (1) chaîne (1)