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 are popular. The characters of the Ural Mountains folklore such as the Mistress of the Copper Mountain became very well known after their appearance in Pavel Bazhov's "The Malachite Box". In the 1930s the Communist Party of the Soviet Union greatly encouraged the interest in the past of the country and the people. The Party paid a lot of attention to the development of the historical science. Maxim Gorky initiated the publication of such books as "The History of Factories and Plants" (). The initiative was supported by the Communist Party. History books and various historical fiction titles were published