New experimental possibilities in nutritive oncology by the model of human tumors, xenotransplanted and passaged into athymic nude mice.

The model of human tumors, heterotransplanted and subsequently passaged into athymic nude mice, enlarges the scale of possibilities in experimental oncology considerably. The model is mostly used in testing therapeutic schedules and principles. But the results of our research indicate that the model can be successfully used in nutritive oncology also. Tumor specific dependencies on dietary ingredients or on nutritive substances may be evaluated.