Mix the L-cystine, sodium chloride, dextrose, yeast extract, and pancreatic digest of casein with the purified water, and heat until solution is effected.

• 将L-胱氨酸、氯化钠、葡萄糖、酵母提取物、酪蛋白胰酶消化物与纯净水混合，并加热至实现溶解。