For an aspiration, a syringe is attached to the needle to collect a small amount of marrow. For a bone marrow biopsy, a special needle is used that allows the collection of a solid core (a cylindrical sample) of marrow.
Lottery wheeling. Lottery wheeling (also known as lottery system, lottery wheel, lottery wheeling system) is used by individual players and syndicates to distribute a subset of the possible lottery numbers across multiple tickets to ensure that at least one of these tickets will contain a winning combination if several draws are in this subset.
Roulette is a casino game that allows players to bet on numbers and colors. A roulette dealer then spins a small wheel one way and spins a ball in another direction until the ball lands on a number and color to determine winning bets. Roulette dealers interact with gamblers, place bets and pay winners with casino chips.