. Ciba Foundation symposium on drug resistance in micro-organisms: mechanisms of development. Drug resistance in microorganisms. MUSTARD USED UP IN ESTERIFICATION 100 120 Fig. 4. Reaction of three different concentrations of phenyl- alanine mustard with a 10% suspension of herring sperm heads. The percentage of esterification was computed from the amount of acid 30 60 TIME (MIN.) no spermheads spermheads. 3% spermheads. 120 Fig. 5. Reaction of herring sperm heads with chlorambucil, the negatively charged mustard which does not react with DNA. The decrease in the amount of aci
. Ciba Foundation symposium on drug resistance in micro-organisms: mechanisms of development. Drug resistance in microorganisms. MUSTARD USED UP IN ESTERIFICATION 100 120 Fig. 4. Reaction of three different concentrations of phenyl- alanine mustard with a 10% suspension of herring sperm heads. The percentage of esterification was computed from the amount of acid 30 60 TIME (MIN.) no spermheads spermheads. 3% spermheads. 120 Fig. 5. Reaction of herring sperm heads with chlorambucil, the negatively charged mustard which does not react with DNA. The decrease in the amount of acid produced in the presence of the sperm heads shows that extensive esterification of the nucleo- protein Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Ciba Foundation; Wolstenholme, G. E. W. (Gordon Ethelbert Ward); O'Connor, Cecilia M. (Cecilia Mary), 1927-. Boston, Little, Brown
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