as the concentration of benzylpenicillin used was raised from 0.03 to 2 micrograms/ml , the ability of growth sites and poles to enlarge was restricted in a manner that most closely agreed with the extent of inhibition of peptidoglycan ( rather than deoxyribonucleic acid , ribonucleic acid , or protein ) synthesis .
C0035668
ribonucleic acid
C0597295
protein