Natural killer cellA type of white blood cell that contains granules with enzymes that can kill tumor cells or microbial cells.
NestinAn intermediate filament protein found in cells such as neural and pancreatic precursors.
Neural crestA band of cells that extend lengthwise along the neural tube of an embryo and give rise to cells that form the cranial, spinal, and autonomic ganglia, as…
Neural plateA thickened band of ectoderm along the dorsal surface of an embryo. The nervous system develops from this tissue.
Neural stem cellA type of stem cell that resides in the brain, which can make new nerve cells (called neurons) and other cells that support nerve cells (called glia).
Neural stem cell (NSC)A stem cell found in adult neural tissue that can give rise to neurons, astrocytes, and oligodendrocytes.
Neural tubeThe embryological forerunner of the central nervous system.
NeuroectodermThe central region of the early embryonic ectoderm, which later forms the brain and spinal cord, as well as evolving into nerve cells of the peripheral…
NeuroepitheliumA specialized epithelial structure that forms the termination of a nerve of a special sense, i.e.
NeuronsNerve cells, the structural and functional unit of the nervous system. A neuron consists of a cell body and its processes-an axon and one or more…
NeurosphereA primitive neural tissue that arises when embryonic stem cells are grown in certain culture conditions.
neutropenia(noo-troh-PEE-nee-uh) An abnormal decrease in the number of neutrophils, a type of white blood cell.
NMDA receptor(N-methyl-d-aspartate receptor). A neurotransmitter receptor for excitatory synapses.
nodeAny device connected to network. PCs, servers, and printers are all nodes on the network.
Non-Myeloablative ("Mini") Stem Cell TransplantA method used to prime a patient for a stem cell transplant by employing lower doses of chemotherapy and/or radiotherapy to damage the leukemia-producing…
NotochordForms the axial skeleton in embryos of all chordates. In vertebrates, it is replaced partially or completely by vertebrae.
Nucleus(NOO-klee-us) In biology, the structure in a cell that contains the chromosomes.