Both types have a pair of cylinders filled with sterile saline solution. After sterilization, an object is referred to as being sterile or aseptic. The hypodermic needle significantly reduces contamination during inoculation of a sterile substrate. Reconstitution in sterile diluent produces a solution for subcutaneous injection. This can be corrected by removal of serum or introduction of sterile saline. An isolate is inoculated into a tube with a sterile transfer loop. Acridine orange is useful in the rapid screening of ordinarily sterile specimens. The milk is immediately cooled down and packed into a sterile container. The female portion is at the fertile ovaries intermixed with sterile white ones. Dimorphism between sterile and fertile fronds is generally subtle. It is reconstituted with sterile water and becomes antivenom. Some tarragon plants produce seeds that are generally sterile. A fifth stamen is either sterile or lacking completely. Asepsis refers to any procedure that is performed under sterile conditions. There are additional requirements for sterile compounding.