Neutrophils are the most common type of white blood cell, comprising about 50-70% of all white blood cells. They are phagocytic, meaning that they can ingest other cells, though they do not survive the act. Neutrophils are the first immune cells to arrive at a site of infection, through a process known as chemotaxis.
One of the basic theories stipulates that increasing interest rates raise consumers' and manufacturers' costs, which, in turn, reduces the amount of time and money people spend driving. Less people on the road translates to less demand for oil, which can cause oil prices to drop.
In fact, while just barely, Obama has seen an even higher gas price increase than Carter dealt with under his administration. Under the Carter administration, gas prices increased by 103.77 percent. Gas prices since Obama took office have risen by 103.79 percent. No other presidents in recent years have struggled as much with soaring oil prices. Under the Reagan administration, gas prices actually dropped 66 percent.