They develop a concentric layered structure: an outer layer of actively proliferating cells, a middle layer of quiescent cells, and a core of necrotic cells and cellular debris.
Squamous cell cancer affects the middle layer of the skin.
There is no need for a middle layer of bureaucracy.
The first is how long it will take for the large middle layer of services to become a commodity.
One of these satellites, CloudSat, has given the first glimpses of the middle layer of clouds in the Earth's atmosphere.
The middle layer of water in a lake or reservoir during the summer is also called a thermocline.
A doctor spins a tube of a patient's blood in a centrifuge and then removes the middle layer of cells.
Dr. Sparks also found a way to make the middle layer of the semiconductor sandwich thinner than a sheet of paper, which prevented the current from becoming unfocused.
In "Razzmatazz," shots of pastel yellow poke through a cascade of black-gray strokes that almost obscure a middle layer of turquoise.
Injected intravenously, the radioactive tracer is rapidly absorbed by the myocardium, the middle layer of muscle tissue that forms most of the wall of the heart.
Uveitis, inflammation of the uvea (or uveal tract), the middle layer of tissue surrounding the eye that consists of the iris, ciliary body, and choroid.
