An antibody is a protein used by the immune system to identify and neutralise foreign objects like bacteria and viruses. Each antibody recognises a specific antigen unique to its target. Production of antibodies is referred to as the humoral immune system.
Rudolf Ludwig Carl Virchow was born on October 13, 1821 in the town of Schivelbein, in the German Kingdom of Prussia. Today the town is called Åwidwin and lies in Poland. His father was Carl Christian Siegfried Virchow, a farmer, and town treasurer of Schivelbein; his mother was Johanna Maria Hesse.
It's a double birthday! J.K. Rowling was born July 31, 1965, in Bristol, England. From the stories that Rowling tells about her composition of the Harry Potter book series, Harry was born on a train one day when she imagined the story. Harry's official birthday as recorded in the novels, however, is July 31.