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.
WHAT WEâRE MADE OF. What are o.b.Â® tampons made of? What are o.b.Â® tampons made of? o.b.Â® tampons are made of two types of rayon and a polyester string. The cover for o.b.Â® ORIGINALâ¢ is made of polyester/polyethylene non-woven material and that of o.b.Â® PRO COMFORTÂ® is made of polyethylene/polypropylene film.