兩棲類の發生初期の代謝終産物について : II.モリアオガエル初期胚の圍卵腔の化學成分について

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MCCLENDON (1914) reported that peri vitelline fluid in the carly developmental stages of Amblystoma and Cryplobranchus contains sodium chloride and the organic acid which shows a slight MILLON reaction, but no trace of protein. The present study reveals the existence of sodium-ion, chlorine-ion and sulphate-ion, but fails to show any trace of potassium-ion, phosphate-ion, ammonium-ion, nitrate-ion and calcium-ion. Moreover, protein, uric acid and urca are found, but no trace of carbohydrates, especially glycogen, are detected. Protein is determined by positive MILLON reaction, suiphosalicylic acid-reaction, HELLER test and MOLISCH reaction. Urea is present in only low concentration, since it shows a slight positive reaction even after 18-hour treatment with urease. As the deveiopment goes on, uric acid increases gradually, and eventually its concentration becomes rather higher than that of uric acid in the bladder urine of adult animals.
社団法人日本動物学会の論文
1952-10-15