• Perelman School of Medicine
• University of Pennsylvania Health System

• January 26, 2010
• “Good” Bacteria Keep Immune System Primed to Fight Future Infections, According to Penn Study
• • News Release
  • Related Image

Bacteria (Streptococcus pneumoniae, red) under attack by a neutrophil (blue).

Credit: Jeffrey Weiser, PhD, University of Pennsylvania School of Medicine

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