Because active brain cells use more oxygen, they can be seen as hot spots against a background of less active cells.
12.
However, Moroccan authorities claim the Saudis were an " active cell " in the al-Qaida terrorist network preparing to go operational.
13.
But the diplomats say it is not yet clear whether al-Qaida has formed active cells or a formal network in the region.
14.
Officials said they formed an active cell in Spain for more than two years, forging documents and collecting funds for the group.
15.
Another design feature is the built-in channels that allow the flow of seawater into non-active cells, keeping the water fresh at all times.
16.
He runs a very active cell in our sector, and hopefully, what we have done tonight is to stall some of his efforts,
17.
He runs a very active cell in our sector and hopefully what we have done tonight is to stall some of his efforts,
18.
Plants form new tissue in an area called the meristem, located near the tips of roots and shoots, where active cell division takes place.
19.
A senior law enforcement official refused Sunday night to say how many active cells the authorities believe may still be operating inside the United States.
20.
These formazan dyes are commonly used in cell proliferation and toxicity assays like the EpiDerm and EpiSkin tests since they only stain living, metabolically active cells.
