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 of the miners and gold prospectors. After the initial publication, the author continuously added new stories to the collection, such as the so-called "mountain fairy tales" in 1942, "Stories of Germans" () in 1943, a series of stories about Russian steel-makers and coiners in 1944–1945, "Stories of Lenin" () in 1944–1945, and others. Every edition of the collection ended with the dictionary of unusual words and concepts. "The Watchhouse on Dumna Mountain" () was Bazhov's essay which served as an introduction to the first edition of "The Malachite Box". It contained some information about the life, industry and culture at