Selective toxicity means that:
the drug kills bacteria but not helminths
the drug kills microbes but is not harmful to the host
the drug kills only a small subset of microbes
the drug can be used at a wide range of concentrations
the drug kills bacteria but not helminths
the drug kills microbes but is not harmful to the host
the drug kills only a small subset of microbes
the drug can be used at a wide range of concentrations