nucleus

Deuterium is an isotope of hydrogen containing a proton and neutron in its nucleus, while normal hydrogen has only a proton.

A July 1884 New York Times article called her “the nucleus and center of the whole organization of crime in New York City.”

To win you have to start winning and these very attractive candidates could help form a nucleus to rebuild the Party.

The Russian people should form the state at the center, “a nucleus around which other peoples are gathered.”

To me, the nucleus of Peter Parker is him being left behind by his parents.

Any epithelial cell may be so granular from degenerative changes that the nucleus is obscured.

Each contains one irregular nucleus or several small, rounded nuclei.

Occasionally the nucleus is irregular in shape, "clover-leaf" forms being not infrequent.

Wright's stain gives the nucleus a deep purple color and the cytoplasm a pale robin's-egg blue in typical cells.

Each contains a single round or oval nucleus, often located eccentrically.