The literature concerning the presence or absence of nuclear material in the cyanophycean cell is too well known to need review ; it is sufficient to say that there is a consensus of opinion in favour of the presence of granules of chromatin, or what Miss Acton (1914) and others prefer to call “metachromatin” (a substance of less complex organisation than chromatin), scattered through the central region of the cell. Since chromatin is of the nature of a nucleo-protein, it seemed worth while investigating the Cyanophyceae for nucleic acid content, in order to determine whether any appreciable quantities of this substance could be extracted.

Copyright © 1927 The Company of Biologists Ltd.
1927
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