海藻類の核酸に関する研究特にアサクサノリの癌腫病に於けるDNA含量の特異性について

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1) The nucleic acids of the algae were found to be composed of DNA and RNA and each component was separated by the modification of OGUR & ROSENs method (Table 1). DNA and RNA were then determined by the ultraviolet absorption method. The results were calculated into mg % in dry matter from the standard curves of authentic specimens of DNA and RNA prepared from calf thymus and yeast respectively (Figs. 2-6). 2) In the laver field near Fukuyama Port, the tumourous fronds appear generally at St. G, E and C, where the water is considerably polluted by the industrial waste from Fukuyama city, at first in December, then the desease become severe and prevail quickly before January. On the other hand, at St. H where the water is rather clear, the desease breakes out later in February or March. 3) DNA contents of the larver fronds are found maximum in the early stage of tumour, and the mode of the monthly changes of the contents at St. G, E and C, seems to have some correspondence to the spreading of the tumour, while RNA contents have no relation with the desease (Figs. 4-6).
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