S Epidermis Virulence Factors No specific virulence factors Ability to form biofilms, which make it harder to treat since the cells inside the biofilm are guarded from antibiotics and the immune systemS. Epidermis Virulence Factors • No specific virulence factors • Ability to form , which make it harder to treat since the cells inside the biofilm are guarded from antibiotics and the immune system biofilms