Question: how to prepare stz solution?
Answer: Dissolve 20.1 g of Citric acid in 200 ml water. Reagent 3: Streptozotocin in 0.1 M Na-Citrate Buffer Reagents and Materials: 0.1 M Na-Citrate, 0.1 M Citric acid, Deionized water Procedure 1. Mix 0.1 M Na-Citrate and 0.1 M Citric acid.