Growth of Bacteraides fragilis group in agar and broth media

B rook , I. 1990. Growth of Bacteroides fragilis group in agar and broth media. Journal of Applied Bacteriology 69 , 697–700. The rate of bacterial growth of four . Bacteroides fragilis group organisms was determined in agar and broth media. Exponential bacterial growth occurred in agar media within 4 to 8 h, while such growth was delayed in broth media and occurred within 12–24 h after inoculation. This phenomenon may explain why antimicrobials which manifest an ‘inoculum effect’ may show increased resistance to antimicrobials when tested in agar media.