Ciliate conjugation is a sexual phenomenon that results in genetic recombination and nuclear reorganization within the cell. In most ciliate groups, however, the cells separate after conjugation, and both form new macronuclei from their micronuclei.
Before the bun, hamburgers are said to have been served between two pieces of bread. In fact, a ground beef patty was known as Hamburger steak (first mentioned in an American cookbook in 1891); when this was put between bread or in a bun it was called a Hamburger sandwich.
Only one of the claimants below served their hamburgers on a bun â Oscar Weber Bilby in 1891. The rest served them as sandwiches between two slices of bread. Most of the following stories on the history of the hamburgers were told after the fact and are based on the recollections of family members.