Hive management in early spring to speed up brood production. Propolis is another byproduct of the bee hive. Certain races of bees are more prone to using propolis. Propolis can be collected on special plastic propolis screens. The tendency of the bees is to use propolis as a glue to seal openings that are too small for a bee to crawl through. A propolis screen is usually put in place of an inner cover. It has small openings that are propolized by the bees. The propolis screen can be frozen which hardens the propolis. Once the propolis is frozen it can be
Fibrin glue and plasminogen. This glue can be used for repairing dura tears, bronchial fistulas and for achieving hemostasis after spleen and liver trauma. It is also employed in "no sutures" corneal transplantation, pterygium excision with amniotic membrane or conjunctival autograft, and in ocular trauma for corneal or conjunctival defects. It can also be used for skin graft donor site wounds to reduce postoperative pain. Fibrin glue Fibrin glue (also called fibrin sealant) is a surgical formulation used to create a fibrin clot for hemostasis or wound healing. It is made up of fibrinogen (lyophilised pooled human concentrate) and thrombin (bovine, which