End-to-end encryption and privacy controls.
Message and call for free* around the world.
Group conversations made simple.
Say it with stickers, voice, GIFs and more.
Reach your customers from anywhere.
感冒冠狀病毒產生的「交叉反應抗體」?預先存在的新冠免疫力 https://geneonline.news/cross-reactive-antibody-of-coronavirus/