2D-DIGE	Two-dimensional difference in gel electrophoresis
APCI	Atmospheric pressure chemical ionization
circRNAs	Circularribonucleic acids
CGH	Comparative Genomic Hybridization
CUP	Cancer of unknown primary
DESI	Desorption electrospray ionization
DNA	Deoxyribonucleic acid
EI	Electron ionization
ELISA	Enzyme-linked immunosorbent assay
ER	Estrogen Receptor
ESI	Electrospray ionization
exRNAs	Extracellularribonucleic acids
FTMS	Fourier transform mass spectrometry
GC-MS	Chromatography combined mass spectrometry
iTRAQ	Ion Trap Quadrupole
kDa	Kilodalton
LC	Liquid chromatography
LF	Labeled free
LC/MS	Liquid chromatography-mass spectrometry
LC-MS/MS	Liquid chromatography-tandem mass spectrometry
lncRNAs	Long non-codingribonucleic acids
LRP	Labeled reference peptide
m/z	mass to charge ratio
MALDI	Matrix-assisted laser desorption/ionization
MALDI-MSI	Matrix-assisted laser desorption/ionization–mass spectrometry imaging
MALDI-TOF	Matrix-assisted laser desorption/ionizationtime-of-flight
microRNA	Micro-ribonucleic acid
miRNAs	Micro-ribonucleic acids
mRNA	Messenger ribonucleic acid
MS	Mass spectrometry
PCR	Polymerase Chain Reaction
piRNAs	Piwi interacting ribonucleic acids
RNA	Ribonucleic acid
RNA-Seq	Ribonucleic acid sequencing
scaRNAs	Small Cajal body-specific ribonucleic acids
SELDI-TOF-MS	Surface-enhanced laser desorption/ionization time of flight mass spectrometry
SID	Stable isotope dilution
siRNAs	Small interfering ribonucleic acids
snoRNAs	Small nucleolar ribonucleic acids
snRNAs	Small nuclear ribonucleic acids
SRM	Selected reaction monitoring
TOF	Time-of-flight
UPLC-QTOF	Ultra-performance liquid chromatography coupled with a quadrupole time-of-light