Surgicel is a hemostatic agent (blood-clot-inducing material) made of an oxidized cellulose polymer (the unit is polyanhydroglucuronic acid), manufactured by the Ethicon subsidiary of Johnson And Johnson. It was introduced into clinical practice in 1947. It is used to control post-surgical bleeding.
Multi Stage: (More than one level of heating or cooling) Multi Stage heating means that you have two levels of heat in your home. You will perhaps have a furnace and another method of heat like a solar panel. The second level of heat is commonly referred to as an emergency heat setting.
Two, three and multi-stage vs. single stage furnaces. Old single-stage gas furnaces are being replaced by a newer type of gas furnaces: multi-stage furnaces, with air sealed combustion and variable speed motors. These new furnaces offer versatility and can increase comfort and energy savings.