Human cells make a soaplike substance that busts up bacteria

A surprising cellular defensive strategy could inspire new antibiotics

Salmonella bacteria infecting human cells

Salmonella bacteria (red in this color-enhanced micrograph) often infect the cells that line human intestines. Infected cells can fight back by releasing a detergent-like compound that helps dissolve Salmonella’s inner membrane.

NIAID

When faced with bacterial invaders, some human cells dispense a surprising substance: soap.