In a typical expression vector, the polyhedrin (polh) gene, which codes for the major protein in the occluded form of the virus, is replaced by a transgene of interest. The transgene can then be expressed under the control of the polh promoter to achieve maximal protein expression in their natural hosts, insect cells.
Commercial rubber is a product that is important to the convenience of our everyday lives. We find it in our tires, our shoes, our flooring, adhesives, and in a plethora of small items that are all made from rubberâwhile the products themselves may be small in size, their significance is usually much larger. In any case, rubber is made from two main sources: naturally-produced latex and petroleum.
Comment. The primary synthetic rubbers include nitrile, isoprene, styrene-butadiene, butyl, chloroprene, polysulfide, silicone, urethane and ethylene propylene diene terpolymer (ETP) or Ethylene Propylene Diene Monomer (EPDM). The synthetics rubbers are called indistinctly ETP or EPDM.EPT is a synthetic rubber known for its superior ability to cope with various climatic conditions, and its resistance to ozone, heat and coldness. It also performs well as an electric insulator and is known for its chemical resistance.he primary synthetic rubbers include nitrile, isoprene, styrene-butadiene, butyl, chloroprene, polysulfide, silicone, urethane and ethylene propylene diene terpolymer (ETP) or Ethylene Propylene Diene Monomer (EPDM). The synthetics rubbers are called indistinctly ETP or EPDM.