... 1) Pharmacodynamics. This product has stronger antimicrobial activity on a variety of gram-positive bacterium, gram-negative bacterium and ... are highly sensitive to this product. Streptococcus, thiamphenicol on resistant of shigella, typhoid salmonella, klebsiella, escherichia coli ... 1,This product has the blood system toxicity, although does not cause irreversible bone marrow aplastic anemia, but the ...