The adaptive immune system is the workhorse of current vaccines. It produces specialized agents, like antibodies and T cells, that target specific pathogens and remember them for years to come. The innate immune system, which deploys within minutes of a new infection, has received less attention because it typically lasts only a few days before ceding the spotlight to the adaptive immune system. It was seen as the warm-up act for the main show.
How to clean up your digital footprint - and why it matters more than you think
。搜狗输入法对此有专业解读
在国外工作多年，逐渐感到世界对中国的关注越来越多，好奇与误解常结伴而行。如何让不同文明更好地读懂彼此？如何让观察中国的人，不仅看见发展的速度与规模，更看见其背后的理念、逻辑与精神？读完西班牙作家胡里奥·塞瓦略斯的《璇玑图》，我找到一些值得分享的答案。
非因被保险人的故意，未将本法第二百四十七条第一款规定的重要情况如实告知保险人的，保险人有权解除合同或者要求相应增加保险费。保险人在保险责任开始前解除合同的，应当退还全部保险费，但是有权收取手续费。保险人在保险责任开始后解除合同的，应当将自合同解除之日起至保险期间届满之日止的保险费退还被保险人，但是解除航次保险合同的，保险人可以不退还保险费。对于合同解除前发生海上保险事故造成的损失，保险人应当承担赔偿责任，但是未告知或者错误告知的重要情况对海上保险事故的发生有影响的除外。