LL37

Immune system - microbial defence LL 37 is a human cathelicidin peptide - part of the innate immune system. Your body already makes it in skin, lungs, gut, and immune cells. Its job: find microbes → punch holes in them → modulate inflammation → help tissue repair. Core functions being Antimicrobial. Active against: bacteria gram+ and gram- - fungi some viruses - biofilms - Mechanism: disrupts microbial membranes.