Click Here for More Images from iStock- 15% off with coupon 15FREEIMAGES 
Leiden leaf c.s. under microscope
Endosomes - 3d rendered image of Endosomes are membrane-bound organelles. They are parts of endocytic membrane transport pathway.  Endomembrane system in cells. Bilayer Lipid Membrane. Abstract medical illustration. Microscopic view. Microbiologic research concept.
Microscopic view of Salmonella enterica serotype Typhi that causes typhoid fever. 3D illustration
corn stem micrograph with dye
Background of mold in the wood of the house.
Photomicrograph of a freshwater clustering single-celled green algae,
Different germs in the human intestines called microbiome,Bacteria Lactobacillus in human intestine,Beneficial healthy intestinal bacterium microflora,Gut bacteria
Green algae cells background
microbiome of human body. Probiotics in immune system. Probiotic background. Microbiome elements on blue. Immune system of body. Human health background. Probiotics texture pattern. 3d rendering.
Bacteria pathogen - 3d rendered microbiology image. Illustrate of Lactobacillus Bulgaricus Bacteria, Microbacterium Tuberculosis Bacteria (MTB). Medical research, health-care concept. SEM (TEM) scanning view
full frame abstract microscopic detail of a human fatty liver
A thick growth of greenshield lichen on a rock. The leaf-like lobes proclaim this a foliose lichen. Lichens are interesting, often beautiful, life forms. They cover 7% of the earth's surface. Though they undergo photosynthesis, they are not plants. They are composite organisms in which algae and fungi live symbiotically. The three main types are foliose, fruticose and crustose. Lichens are indicators of environmental quality, and they do no harm to the natural substrates on which they grow.
Rhizopus (bread mold) is a genus of common saprophytic fungi,Rhizopus (bread mold)  under the microscope.
Particles, medical concept
Microscope photo of a sambucus stem with parenchyma cells.
Natural agate surfaces, suitable for backgrounds and wallpapers.
Breast tissue adenocarcinoma immunohistochemistry. Estrogen receptors.
Bacteria medical illustration - 3d rendered microbiology image. Illustrate of Lactobacillus Bulgaricus Bacteria, Microbacterium Tuberculosis Bacteria (MTB). Medical research, health-care concept. SEM (TEM) scanning view
abstract background with bokeh lights
Euglena is a genus of single cell flagellate eukaryotes under microscopic view for study.
Triangular pollen grains of
traditional thai fabric
Diffuse large B-cell lymphoma, or DLBCL, is a cancer that starts in white blood cells called lymphocytes.
Basil seeds in syrup in bowl on yellow background.
Quantum Gravity 3d rendered image of a comprehensive exploration of Quantum Gravity theories. String theory, loop quantum gravity (LOG), causal dynamical triangulation, twistor theory, gravitational waves, spacetime, gravity waves, quantum mechanics, quantum entanglement concepts.
Microscope photo of the cells from a young broad bean steam (Vicia faba).
abstract alloy texture design background.
Cross-section Dicot, Monocot and Root of Plant Stem under the microscope for classroom education.
Abstract particles
Free Images: "bestof:Anthrax bacillus spores (5940428555).jpg Anthrax bacillus spores viewed under a microscope in a cell chamber to measure concentration Credit NIST Disclaimer Any"
AFM 2 (5940986486).jpg
Laser Tracker (5940486369).jpg
Tissue Engineering; Biomaterials for the Heart (5881107872).jpg
Coordinate Measuring Machine (5940440685).jpg
New Imaging Tool is Boon to Fuel Cell Research (5880686731).jpg
Real-time Quality Control for Welding (5884928619).jpg
Chemistry, calibrations, mercury emissions (5940996728).jpg
Facial Recognition (5883951201).jpg
Design_Analysis_of_the_P-38_Lightning.png
Anthrax bacillus spores (5940428555).jpg
Anthrax spores (5940425745).jpg
Anthrax_spores.jpg
Anthrax toxins (10444900713).jpg
Anthrax Detection (5880546385).jpg
Scratch Drive Actuator (8097296709).jpg
Anthrax_color_enhanced_micrograph.JPG
Digital Readout (8622935270).jpg
3D Test Method for Biomaterials (5885545588).jpg
Lab-on-a-chip; Micro Microwave (5940485285).jpg
High pressure hydrogen test chamber (5941039502).jpg
Atomic Force Microscope (5940984824).jpg
Silicon Wafer (5828755632).jpg
Gram_Stain_Anthrax.jpg
Photoelectrochemical Hydrogen Cell (8745404802).jpg
NIST engineer Tasshi Dennis with NIST's solar simulator (14441483621).jpg
Model of crystal plasticity (14531526397).jpg
Nanoparticles in a Neural Cell (16017132266).jpg
Nanofibers (6146486611).jpg
Comb Apparatus (7187334463).jpg
Anthrax_Bacillus_Cultures_-_A_Text-Book_on_Disease-Producing_Microörganisms_-_By_Maximilian_Herzog,_1910.jpg
Anthrax_01.jpg
Bacillus subtilis endospore stain.png
PA-63-octamer 3HVD.png
Midland-MI-Anthrax-Scare-Locations.png
Ä°nhalativ qarayara.jpg
Carbon Nanotube Measurements (5887265427).jpg
Bt-toxin-crystals.jpg
Flow meter (8622934876).jpg
Thermal Response Tester (8621832011).jpg
Smooth muscle cells (5940523093).jpg
NIST Demos Industrial-Grade Nanowire Device Fabrication (5940502949).jpg
NIST Demos Industrial-Grade Nanowire Device Fabrication (5940503049).jpg
Nanodots Moving Up Model Food Chain (5887833498).jpg
Gadolinium acetate under microscope polarizer.jpg
Nanoparticle (15349401588).jpg
Ultraviolet Lights; NASA (5940516867).jpg
Nanowires (5941057248).jpg
Lab-on-a-chip; Micro Microwave (5941044930).jpg
Metal-oxide nanotubes (5887831276).jpg
Nanocubes (5887830418).jpg
Nanocubes (5887830378).jpg
Construction; Metrology; 3-D Imaging (5885495564).jpg
Algae Toxin; Pfiesteria (5885283272).jpg
Microfluidic palette (5880463875).jpg
Elham Tabassi (16061987156).jpg
TSOM; Nanoscale Optical Technique (5941079996).jpg
Shear Ingenuity- Tweaking the Conductivity of Nanotube Composites (5941080740).jpg
Atomic Switch Figures A and B (5940488339).jpg
Lab-on-a-chip; Micro Microwave (5941044672).jpg
Assessing prototype reference material for testing emissions of VOCs (5940985174).jpg
Nanowires (5887263715).jpg
A Greener Antiwear Additive for Engine Oils (5885495016).jpg
Nanoscale Line Roughness (5884303799).jpg
Measuring Radio Environment (5883950793).jpg
Cell Culture (8145031511).jpg
Scanning Tunneling Microscope Structure (5941082310).jpg
CT scans (5941057880).jpg
Lab-on-a-chip; Micro Microwave (5941045094).jpg
Nanoparticles; Medicine (5941040746).jpg
Lipid Molecules (5941036454).jpg
Atomic Force Microscope (5940987164).jpg
Cells Selectively Absorb Short Nanotubes (5881057302).jpg
Breast Cancer and Alcohol Consumption (5881108114).jpg
Microelectromechanical system (MEMS) (5880495531).jpg
Bone Cells (5828753702).jpg
Monoclonal antibodies (mAbs) (14050986246).jpg
Silicon Rings (10747924673).jpg
Dr. Patrick Gallagher (10715126213).jpg
Firefighter Breathing Apparatus (9459177482).jpg
Christopher Blackburn (7454793044).jpg
Graphene (6680206395).jpg
Wireless Communications; Cell Phone (5941076402).jpg
Mechanical Motion Used To 'Spin' Atoms in a Gas (5941046994).jpg
Gag Molecules (5888007689).jpg
Nanodots; data storage (5887268219).jpg
Microfluidics; Semiconductors (5884297491).jpg
Femtomolar Optical Tweezers (5881942888).jpg
Identifying Bacteria with Quantum Dots (5887835772).jpg
Nanochemistry; Single Molecules; Microdroplets (5941040594).jpg
Quantum Dot Lasers. One Dot Makes All the Difference (5941062786).jpg
Membrane Dynamics (7788221312).jpg
ESANS (6815972730).jpg
Human Lung Cells (6680207077).jpg
Nanowire; Sensor (5978119246).jpg
Using Nano-Magnets to Enhance Medical Imaging (5940526011).jpg
Toxin; Ricin (5941078632).jpg
Trace Explosives Standard (5940519353).jpg
Organic Solar Power (5941059300).jpg
Network Analyzer Calibration (5940499893).jpg
Microscopy, Scanning Photoionization Imagery, SPIM Image (5940488089).jpg
Terms of Use   Search of the Day