PCF	Photonics band gap fiber
PZT	Lead zirconate titanate
OCT	Optical coherent tomography
DAC	Dual-axis confocal
FOV	Field-of-view
PMT	Photomultiplier tubes
APD	Avalanche photodiode
NA	Numerical aperture
DCF	Double clad fiber
PAM	Photoacoustic microscope
PA	Photoacoustic
UST	Ultrasound transducer
3D	Three-dimensional
MEMS	Microelectromechanical Systems
GRIN	Graded index
CPC;Apc	CDX2P-NLS Cre;adenomatosis polyposis coli
GI	Gastrointestinal
WD	Working distance