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.
Berkowitz was born on June 1, 1953, to Betty Broder, who was having an affair with Joseph Kleinman, a married man. Broder herself was married to one Anthony Falco at the time. Before Berkowitz was even a week old, he was put up for adoption. He was placed in the care of hardware store owners Nathan and Pearl Berkowitz, who changed his name to David Richard Berkowitz and gave him a normal upbringing.