Malachite green is retained in catfish muscle longer (HL = 10 days) than is the parent molecule (HL = 2.8 days). The (oral, mouse) is 80 mg/kg. Rats fed malachite green experience "a dose-related increase in liver DNA adducts" along with lung adenomas. Leucomalachite green causes an "increase in the number and severity of changes". As leucomalachite green is the primary metabolite of malachite green and is retained in fish muscle much longer, most human dietary intake of malachite green from eating fish would be in the leuco form. During the experiment, rats were fed up to 543 ppm of leucomalachite green,
The Malachite Box showed that he used vague folkloric beliefs and molded then into an original mythology. When asked whether his early stories were closer to folklore sources, Bazhov agreed. As time went by, he became less depended on the folklore and more independent as a writer. The current consensus among the folklore specialists is that he used the fragments of legends and bound them together by his own creative imagination. The first edition of "The Malachite Box" was released on 28 January 1939. It consisted of an introduction titled "The Watchhouse on Dumna Mountain" and 14 stories, based on the oral lore