科学家们发现,摄入含有硝酸盐和亚硝酸盐的食物后,维生素C可能有助于防止潜在致癌化学物质在胃中形成。一种新的数学模型表明,服用Scientists have discovered that vitamin C may help prevent potentially cancer-causing chemicals from forming in the stomach after eating foods containing nitrates and nitrites. A new mathematical model suggests that taki