(四)血液巯基,抗坏血酸及血清钙的变化巯基是体内许多具有重要生理功能物质的必需基团,别氏认为巯基在癌瘤的发生和发展中起着重要作用。飯田氏发现子宫颈癌患者血清抗坏血酸含量下降。血清钙在癌肿患者的变化各家的报告互有参差。意见不一。我们对此三项成分在一些癌肿病人中作了初步观察,兹将结果简述如下: (4) Changes in blood sulfhydryl, ascorbic acid, and serum calcium Sulfhydryl is an essential group of many important physiologically functional substances in the body. Others believe that sulfhydryl plays an important role in the occurrence and development of cancerous tumors. Iida discovered a decrease in serum ascorbate levels in patients with cervical cancer. Changes in serum calcium in cancer patients vary from report to report. There are different opinions. We have made preliminary observations on these three components in some patients with cancer. The results are briefly described as follows: