11. Teicoplanin is much better at penetrating into leucocytes and phagocytes than vancomycin . 12. Its chemical structure as a lipoglycopeptide is similar to vancomycin . 13. Resistance to the antibiotics ampicillin and vancomycin has been observed. 14. The story about avoparcin and vancomycin is rewriting itself, 15. The oregano oil was tested against the antibiotics streptomycin, penicillin and vancomycin . 16. Vancomycin : An antimicrobial drug used against germs resistant to most other antibiotics.17. The greatest threat now is from vancomycin -resistant enterococcus ( VRE ). 18. Recently, however, vancomycin -resistant strains have emerged, Bia said. 19. Avoparcin is closely related to the most carefully guarded human antibiotic, vancomycin . 20. Vancomycin , she thought, could kill that infection.