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Gene expression is reduced through the stable expression of an shRNA using an H1 or U6 promoter . African art is any form of art or material culture that originates from the continent of Africa . High quality jewellery and religious imagery were produced throughout Western Europe , Charlemagne and other monarchs provided patronage for religious artworks and books . Multiple plate formats and labware are supported , and the software architecture accommodates expansion of the system to include additional modules and new third-party devices in a plug-and-play fashion . The bottom line is that education is a service by the commonly accepted definition of the term , and traditional economic reasoning is just as applicable to the provision of education as it is to any other service .