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.
There are hundreds, if not thousands, of possible wheel combinations, but they all boil down to three key elements: 1  The minimum guarantee (for example, I want to match a minimum of 3 numbers), 2  The number of lottery numbers drawn that must fall within your set of numbers in order to guarantee a prize, and,