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.
A pneumatic tire for off-the-road use, said tire having a tread formed from a silica-free rubber tread compound consisting essentially of 100 parts by weight of a rubber selected from natural rubber, synthetic polyisoprene, and a blend of natural rubber with no more than 25 parts of styrene-butadiene-rubber for 100 parts by wt of total rubber, at ...