string: …inhibition
  Antibiotic inhibitory traits of Streptomyces isolates were evaluated against 5
  standard Streptomyces isolates that vary in their antibiotic resistances (DL87, 4-2, 2-12, 4-16, and 6-14; Davelos et al., 2004b) using an agar-overlay method as described in Davelos et al. (2004a).