Only blood vessels with endothelial cell nuclei, astrocytes with their nuclei, and neurons with their nuclei within the plane of section were included in the count.
In this way, their nuclei are turned into a quiescent state.
Ninety-nine percent of carbon atoms are carbon 12, containing six protons and six neutrons in their nuclei.
Because the outer shell of electrons surrounding their nuclei is arranged in a highly stable form, it was thought they could not be chemically bonded with other atoms.
Iron atoms have 26 electrons in different orbitals around their nuclei.
Finally the cells flatten, lose their nuclei, and form the stratum corneum.
Some cells e.g., the human red blood cell lose their nuclei upon maturation.
This in turn affects red blood cell production: the cells divide, but their nuclei remain immature.
Although the muscle cells of flatworms are generally not musculoepithelial, their nuclei are found in large cell bodies.
Such a situation can occur only if the atoms have different numbers of neutrons in their nuclei.
Their nuclei were euchromatic and rounded.
