prevotella bacteria, 3d . gram-negative anaerobic bacteria, cause anaerobic infections of respiratory tract

prevotella rod bacteriology periodontal anaerobic gramnegative periodontitis joints periodontosis rheumatoid copri anaerobe infection oral flora respiratory tract bacteroidetes pathogenic arthritis background 3d illustration medicine science colorful intestine research microbiology dentistry microbe cavity disease microorganism bacterium pathogen surface medical scientific photo realistic render many group several normal