Images

Screen capture of primary hepatocytes isolated from experimental smallmouth bass (Micropterus dolomieu) visualized following image-based flow cytometric analysis

USGS scientists working at laboratory fume hood

Geospatial Analyses and Applications — Salt Lake City, Utah. Attribution of storm-weighted potential contaminant hazard ranks to sampling locations in the Sediment-Bound Contaminant Resiliency and Response (SCoRR) network.

Organic Chemistry Research Laboratory — Sacramento, California. Gas chromatograph-mass spectrometer - GCMS

USGS scientist examining human breast cancer cells under a microscope in the cell bioassay laboratory at Columbia Environmental Research Center. Behind the scientist is an automated liquid handling system for dispensing reagents into multi-well micropates for bioassay experiments.

Bioactive Chemicals Research Laboratory -- Boulder, Colorado. Fathead minnows (Pimephales promelas) swimming in an expermental aquaium

Fathead minnows (Pimephales promelas) swimming in an expermental aquaium. The aquarium is part of an experiment to assess endocrine disruption in fish.

USGS) scientist preparing to measure cyanotoxins in water samples using an automated enzyme-linked immunosorbent assay (ELISA) instrument

Organic Geochemistry Research Laboratory — Lawrence, Kansas. Pressurized Fluid Extractor

View of the new (2018) instrument laboratory at the Organic Geochemistry Research Laboratory (OGRL), Lawrence, Kansas. View of a row of instruments in the laboratory.

Organic Geochemistry Research Laboratory — Lawrence, Kansas. Scientists working on at time-of-flight mass spectrometer

Organic Geochemistry Research Laboratory — Lawrence, Kansas. Sample processing laboratory.

The nCounter SPRINT^† system simultaneously analyzes transcript abundance of hundreds of genes in a single sample

Functional and Molecular Bioassay Laboratory — Kearneysville, West Virginia. Multiwell cell culture array

Image-based flow cytometer for cell population analysis

U.S. Geological Survey scientists, collecting oil from wells at the National Crude Oil Spill Fate and Natural Attenuation Research Site near Bemidji, Minnesota. 

Microbial Biogeochemistry Laboratory — Menlo Park, California. USGS scientist collecting samples of aquatic species from the Pike River, Wis., for later analysis of mercury contamination.

Passive Sampling Research—Columbia, Missouri. The polar organic chemical integrative sampler (POCIS - on the left) and semipermeable membrane devices (SPMDs - on the right) samplers are used for sampling hydrophilic organic chemicals from water. The SPMDs sampler can also be deployed for air sampling.

Hydrogeophysics Laboratory — Storrs, Connecticut. A saltwater tracer was injected into the shallow aquifer at a uranium-contaminated site in Colorado and monitored for 28 days using a combination of geophysical and well-sampling arrays; the sampling array is marked by the white standpipes adjacent to the central injection tank.

USGS scientist collecting samples of aquatic species from the Pike River, Wis., for later analysis of mercury contamination

Hydrogeophysics Branch -- Storrs, Connecticut