@Sunil7 5 December 2021 more from that month

Do you know! Before knowing that they are different groups in blood, patients are injected with blood, for some it was Ok, but for some it may lead to serious problems, By these symptoms only they came to know that blood has different groups. In 1901, Karl Lansteiner separated first time blood into different groups. The above content is 💯 from my Pen of inspiration,,,#SunilVision Photograph: Inside view of temple ( No filters used). @Sunil ( My Knowledgeable Contents ).