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The distribution of chlorophyll was examined in cross-sections of 2- and 6-year-old stems as well as in the bark of the stump trunk of beech trees, utilising chlorophyll autofluorescence. The investigations were conducted using a confocal microscope. The tests carried out on 2 - 6-year old stems showed a large presence of chlorophyll in the bark, in primary and secondary rays as well as in the pith,...
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