[Effect of a new food product--cryl paste--on chemical carcinogenesis]

The influence of a new food product obtained from oceanic shrimp--the cryl on the development of tumours under the effect of chemical carcinogens was investigated. DAB (n-dimethylaminobenzene) induced tumours of the liver in 90.8% of the test rats against the background of a caseine-rich diet and in 21.7% of the animals receiving the cryl paste as a part of their alimentation. With the diethylnitrosamine (DENA) induced tumours the lowest percentage (43) and inhibited development were noted with the rats fed on the cryl paste, and the highest--when feeding the animals of beef (74), whereas in the case of a caseine-rich diet--tumours developed in 50% of the animals. Features specific for morphogenesis of tumours induced with DENA with the animals kept on a diet containing different types of protein and also histo- and biochemical changes in the liver in carcinogenesis were studied.