Thermal reactors generally depend on refined and enriched uranium. Purified uranium can also be enriched into the isotope U-235. In these deposits, thorium is enriched along with other heavy minerals. Pasta may be enriched or fortified, or made from whole grains. Leaching dissolves minerals in an ore body and results in an enriched solution. It can be enriched with many different ingredients. Work with highly enriched uranium is also conducted here. The collection was enriched with Russian minerals. Therefore, to make a weapon, either uranium must be enriched, or plutonium must be produced. So arsenic can be enriched in water with elevated Fe concentrations. Khemlani was said to have contacts in the newly enriched Arab oil nations. Aggregates were enriched about 10 more than seawater. Bread was sometimes enriched by the addition of flour from legumes (). There are transcription factors that are specifically enriched on and regulate housekeeping gene promoters . H3K4me1 is enriched at active and primed enhancers.