The nucleus consists of uncharged neutrons and positively charged protons.

Among the channels that decorate E. coli's membranes are pumps that hurl positively charged protons out of the microbe.

The most important particles in an atomic nucleus are positively charged protons, and each element is distinguished from all others by the number of protons it contains.

Materials are made up of atoms and molecules that contain positively charged protons and negatively charged electrons.

Since neutrons have no electric charge they can enter a nucleus more easily than positively charged protons, which are repelled electrostatically.

The heaviest nuclei, like uranium 235 are not so tightly bound since they have many positively charged protons (92 for uranium) which repel each other.

They should annihilate one another when they meet, producing antiprotons (negatively charged protons).

The nucleus was known to contain closely packed, positively charged protons.

At distances smaller than 2.5 fm this force is much more powerful than the electrostatic force that causes positively charged protons to repel each other.

This lessens the repulsive force (fewer positively charged protons) without changing the attractive force very much.