Tetracyclines are broad-spectrum antibiotics produced by the Streptomyces genus of Actinobacteria whose general usefulness has been reduced with the onset of antibiotic resistance. It exerts a bacteriostatic effect on bacteria by binding reversible to the bacterial 30S ribosomal subunit and blocking incoming aminoacyl tRNA from binding to the ribosome acceptor site. It also binds to some extent to the bacterial 50S ribosomal subunit and may alter the cytoplasmic membrane causing intracellular components to leak from bacterial cells. country meats com sample pack bsa htm https://www.creative-diagnosti....cs.com/food-analysis