Spider silk spinning field, the spinneret apparatus of an adult "Araneus diadematus" (garden cross spider) consists of the glands shown below. Similar multiple gland architecture exists in the black widow spider. In order to artificially synthesise spider silk into fibres, there are two broad areas that must be covered. These are synthesis of the feedstock (the unspun silk dope in spiders), and synthesis of the spinning conditions (the funnel, valve, tapering duct, and spigot). There have been a number of different approaches. The molecular structure of unspun silk is both complex and extremely long. Though this endows the silk fibres with their
Garden centre Garden centre A garden centre is a retail operation that sells plants and related products for the domestic garden as its primary business. It is a development from the concept of the retail plant nursery but with a wider range of outdoor products and on-site facilities. It is now usual for garden centres to obtain their stock from plants which have been propagated elsewhere, such as by specialist nurseries or wholesalers. Garden centres are primarily found in Europe. A garden centre in the UK sells plants, compost, fertilizers, tools and landscaping products such as statues, furniture and garden ornaments. Some