ISSN:
1476-4687
Source:
Nature Archives 1869 - 2009
Topics:
Biology
,
Chemistry and Pharmacology
,
Medicine
,
Natural Sciences in General
,
Physics
Notes:
[Auszug] PENICILLIN purified as described by Abraham and Chain1 contains nitrogen. The interpretation of low positive results in the Dumas analysis of less pure material was made uncertain by the failure to respond to the usual qualitative test and by low results in Kjeldahl estimations. ...
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1038/149356a0