1The nucleus of an atom is the central part that contains its protons and neutrons.
2What is the nucleus of the company's business strategy, and how does it drive innovation?
3The nucleus of the city's cultural scene is the historic downtown area, where many museums and galleries are located.
4The nucleus of a cell is the part that contains its genetic material and controls its growth and reproduction.
5The researchers identified the nucleus of the problem as a lack of communication between departments, which was causing delays and inefficiencies.