it is bactericidal for a wider range of organisms , may be used at only half the concentration needed for penicillin and streptomycin , does not apparently interfere with growth of tissue cultures and viruses , remains active at 37 degrees c. , and , most remarkable of all , it is stable at autoclave temperatures and so can be put into media before sterilization , thus lessening the number of additions to the sterilized medium .
C0029235
organisms
C0042776
viruses