ABSTRACT
The method for determination of mass in biological material described by Engström & Lindström (1950) is founded on the fact that the absorption of X-radiation at 8-10 Å is proportional to the mass of the biological substance. In elaborating this method for quantitative analysis of nerve-cells and their components (Brattgård & Hydén, 1952) we found it important to consider the following sources of error:
The reference system.
The photographic process and the photometry.
The treatment of the material.
Copyright © 1953 by Company of Biologists
1953
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