Biology
Antimicrobial Resistance Mechanisms in Gram-Negative Bacteria
Quick fact
Gram-negative bacteria are intrinsically resistant to many antibiotics because their outer membrane blocks drug entry, and they can share resistance genes with one another via horizontal transfer.
Why this is interesting
You've probably taken antibiotics that worked, but have you ever wondered why some infections just won't clear up? Why do common bacteria like E. coli become untreatable?