V. Long-term Maintenance of Two Strains on Synthetic and on Stock Diets. ∗

Abstract

Summary

Two strains of highly inbred mice, one tumor-susceptible and the other tumor-resistant, were maintained for a period of about one year on a stock diet or on a synthetic ration adequate for good growth performance. The tumor-susceptible A strain on synthetic diet showed numerous deficiency symptoms not seen on stock rations and not shown to any great extent by C₅₇ mice on either stock or synthetic diets.