Example sentences of "then [verb] upon [prep] " in BNC.
Next page| No | Sentence |
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| 1 | Free arachidonic acid is then acted upon by the system of microsomal enzymes known as prostaglandin synthetase which is composed of cyclo-oxygenase and peroxidase activities . |
| 2 | The apocrine secretions are diluted by sweat , and then acted upon by bacteria living in the protective jungle of hairs , to form distinctive body odours . |
| 3 | Even drawing lightning sketches to then elaborate upon in the studio would not work for me . |
| 4 | Even drawing lightning sketches to then elaborate upon in the studio would not work for me . |
| 5 | However , it is my belief that when rabbits were introduced here and multiplied they were then predated upon by animals already resident . |