translation.en: We had almost 300 blood samples from healthy human beings 20 to 89 years of age, and we measured over 100 of these communication factors, these hormone-like proteins that transport information between tissues.
translation.zh: 我们有近300份健康人类的血液样本， 年龄范围在20-89岁， 我们测量了超过100种的这些通信因子， 这些可以在组织间 传递信息的激素样蛋白质。