ACA - American Crystallographic Association
ALS - Advanced Light Source
APS -Advanced Photon Source
CAT - Collaborative Access Team, a group of researchers who collaborate on the development of a sector (two beamlines) at the APS
CHESS - Cornell High Energy Synchrotron Source
DESY - Deutsches Elektronen-Synchrotron
DOE - U. S. Department of Energy
ESRF - European Synchrotron Radiation Facility
EXAFS - Extended x-ray absorption fine structure
HHMI - Howard Hughes Medical Institute
LURE - Laboratoire pour l'Utilisation du Rayonnement Électromagnétique
MAD - Multiwavelength anomalous diffraction
NCRR - National Center for Research Resources of NIH
NIH - National Institutes of Health of the U. S. Public Health Service
NSF - U. S. National Science Foundation
NSLS - National Synchrotron Light Source
OBER - Office of Biological and Environmental Research of DOE, formerly know as the Office of Health and Environmental Research (OHER)
PDB - Brookhaven Protein Data Bank, an international database of three-dimensional structures of biological macromolecules
PhFac - Photon Factory
SAXS - Small-angle x-ray scattering
SPEAR - Stanford positron-electron accelerator ring
SRS - Synchrotron Radiation Source
SSRL - Stanford Synchrotron Radiation Laboratory
XANES - X-ray absorption near-edge structure
XAS - X-ray absorption spectroscopy