MH malignant hyperthermia
MHC major histocompatibility complex
MHPG 3-methoxy-4-hydroxyphenylglycol
MKP MAP-kinase phosphatases
ML molecular layer
MLD metachromatic leukodystrophy
MMA methylmalonic acid
M-MLV Moloney murine leukemia virus
MMN multifocal motor neuropathy
Mn manganese
Mo molybdenum
MODY maturity onset diabetes of the young
MOG myelin oligodendrocyte glycoprotein
mol mole
MOP myelin oligodendrocyte protein
MOR mu opoid receptor
MPG mercaptopropionyl glycine
MPO myeloperoxidase
MPP+ 1-methyl-4-phenylpyridinium ion
MPTP 1-methyl-4-phenyl-1,2,3,6-tetrahydropyridine
Mr relative molecular mass
MRI magnetic resonance imaging
mRNA messenger RNA
MRP multidrug resistance protein
MRP multi-drum resistance associated protein
MS multiple sclerosis
MSA multiple system atrophy
MSD multiple sulfatase deficiency
MSUD maple syrup urine disease
MT microtubule
mtDNA mitochondrial DNA
MTOC microtubule-organizing center
MuSK muscle specific kinase
n nu
N nitrogen
Na sodium (NL. Natuium)
Na,K-ATPase sodium-potassium stimulated adenosine triphosphatase
Na+ sodium ion
NAAG N-acetylaspartyl glutamate
NAALADase N-acetyl alpha-linked acidic dipeptidase
NAAQS national ambient air quality standard
nAChR nicotinic acetylcholine receptor
NAD+ nicotinamide adenine dinucleotide (oxidized)
NADH nicotinamide adenine dinucleotide (reduced)
NADP+ nicotiniamide adenine dinucleotide phosphate (oxidized)
NADPH nicotinamide adenine dinucleotide phosphate (reduced)
NAG N-acetylglutamate
NALD neonatal adrenoleukodrystrophy
NANA N-acetylneuraminic acid
Nb niobium
NBQX 6-nitro 7-sulphamobenzo[f]quinoxaline-2,3-dione
NBT nitroblue tetrazolium
NC neural crest
NCAM neural cell adhesion molecule
NCAM neural cell adhesion molecule
NCL neuronal ceroid lipofuscinosis
Nd neodymium
NDF neu differentiation factor
nDNA nuclear DNA
NE norepinpherine
Ne neon
NET norepinephrine transporter
NF neurofilament or neurofibromatosis
NF-kappaB nuclear transcription factor kappa B
NFT neurofibrillary tangle
NgCAM neuroknal glial cell adhesiionmolecule
NGF nerve growth factor
NGFR nerve growth factor receptor
NHE Na+/H+ antiporters
NIPP nuclear inhibitor of protein phosphatase
NKH nonketotic hyperhlycinemia
NL nucleus laminaris an area in the chick auditory brainstem
NM nucleus magnocellularis an area in the chick auditory brainstem
NMDA N-methyl-D-aspartate
NMJ neuromuscular junction
NMR nuclear magnetic resonance
nNOS neuronal nitric oxide synthetase
NO nitric oxide
No nobelium
NOS nitric oxide synthetase
Not I primer adaptor system designed to prime first strand cDNA synthesis at the poly(A) tail of mRNAs
Not I restriction endonuclease
Np neptumium
NPY neuropeptide Y
NR-1 NMDA receptor type 1
NR-2A NMDA receptor type 2-A
NR-2B NMDA receptor type 2-B
NR-2C NMDA receptor type 2-C
NR-2D NMDA receptor type 2-D
NRD N-arginine dibasic
NRPTK nonreceptor protein tyrosine kinase
NSAID nonsteroidal anti-inflammatory drug
NSAID non-steroidal antiinflammatory drum
NSF N-ethylmaleimide-sensitive factor
NT neurotrophin
NTA nitrilotriacetate
o omicron
O oxygen
OAG 1-oleoyl, 2-acetyl sn-glycerol
OCD obsessive compulsive behavior
OCRL oculocerebrorenal syndrome
Ol oligodendrocyte
ONOO- peroxynitrate
ORF open reading frame
ORI replication origin in a plasmid
Os osmium
OTC ornithine transcarbamylase
p pi
P phosphorous
p.p.b. parts per billion
p.p.m. parts per million
P0 P zero
P0 peripheral myelin basic protein
P1 P-one
P2 P-two
PA phosphatidic acid
Pa protactinium
PACAP pituitary adenylyl cyclase-activating peptide
PAF platelet-activating factor
PAH phenylalanine hydroxylase
PAL peptidyl-a-hydroxyglycine a amidating lysase
PAM peptidylglycine a-amidating monooxygenase
PaO2 partial pressure of ambient arterial oxygen
PARP polyADP-ribose polymerase
PAS periodic acid Schiff base
Pb lead (L. plumbum)
PBN N-tert-butyl-alpha-phenyhlnitrone
PBN phenyl-tert-butylnitrone
PC phosphatidylcholine or prohormone convertase
PCA parachloroamphetamine
PCL Purkinje cell layers
PCP phencyclidine
PCP pentachlorophenol
PCPA parachlorophenylalanine
PCR polymerase chain reaction
PCr phosphocreatine
PD Parkinson's disease
Pd palladium
PDE phosphodiesterase
PDGF platelet-derived growth factor