Click Here for More Images from iStock- 15% off with coupon 15FREEIMAGES 
Bacterial multidrug efflux pumps (E-CmeB) expel antibiotics from inside the bacterium (bottom): ciprofloxacin (yellow), chloramphenicol (violet), ampicillin (red).
Close-up shot of a petri dish for checking an antibiotic in the laboratory.
A quadrant streak of the bacterium Staphylococcus aureus cultured or inoculated on Baird-Parker agar with egg tellurite .
Blastomycosis is a fungal infection caused by inhaling Blastomyces dermatitidis spores. If it involves only the lungs, it is called pulmonary blastomycosis. Only about half of people with the disease have symptoms, which can include fever, cough, night sweats, muscle pains, weight loss, chest pain, and feeling tired.
Cryptococcus neoformans fungus, computer illustration. C. neoformans is a yeast-like fungus that reproduces by budding. An acidic mucopolysaccharide capsule completely encloses the fungus. It can cause the disease cryptococcosis, especially in immune deficient patients, such as those with HIV/AIDS (acquired immunodeficiency syndrome). It can infect the brain, causing meningitis or brain abscesses, lungs or skin. The most common clinical form is meningoencephalitis. It is caused by inhaling the fungus from soil that has been contaminated by pigeon droppings.
Photomicrograph of filamentous blue-green algae, Oscillatoria species. Each band along the stand is one cell. This filament is very short probably having recently parted from a longer one. Filaments are typically many times longer. This algae is mobile, it moves and twists through the water. San Francisco Bay, California, USA. Live specimen. Wet mount, 40X objective, transmitted brightfield illumination. Note - motion blur of live specimen, very shallow depth of field, chromatic aberration and uneven focus are inherent in light microscopy.
Backgrounds of Bacteria and Mold under the microscope in Lab.
Klebsiella pneumonia (large colony) and Enterococcus fecium (small colony) grown on an agar plate. Klebsiella pneumonia is ESBL and multidrug resistant and Enterococcus fecium is vancomycin resistant.
Immunotherapy of Alzheimer's disease: Monoclonal antibody (light blue) bound to an amyloid beta peptide (orange), that is aggregated to amyloid beta fibrils, which build up amyloid plaques.
Close-up shot of a petri dish for checking an antibiotic in the laboratory.
False color image of diatom under the microscope
Liver Fluke Section under light microscope with white background
Blue colored stem cells of a lentil plant under the microscope.
Dryer lint collected in filter
3D cartoon and Gaussian surface models, PDB 6gu2, white background
Candida albicans grown on chromogenic agar plates. Candida albicans, a fungus naturally present in small quantities on the body, inhabits areas such as the mouth, skin, and intestines. When the balance with healthy bacteria is disrupted, Candida can lead to infections like thrush and vaginal yeast infections. These infections are frequent and typically addressed with antifungal medications.
After dopamine binding, the dopamine receptor changes his shape and binds the inactive G protein.The G protein expels its GDP molecule replacing it by GTP. and falls into two pieces. The Galpha subunit binds to and activates the enzyme adenylyl cyclase, which produces then cyclic AMP spreading a signal through the cell.
Close-up shot of a petri dish for checking an antibiotic in the laboratory.
A listeria monocytogenes growing on an agar plate isolated on a black background
Chain or ribbon diatom, a type of algae.
Antimicrobial susceptibility testing in petri dish. Microbiologist check Antibiotic resistance of bacteria
Bone marrow plasma cells .Plasma cell neoplasms are diseases in which the body makes too many plasma cells. Plasma cell neoplasms can be benign or malignant. Diagnosed with Immunostain CD138 positive.
Green and red colors. Trichoderma and Sclerotinia in the laboratory in the special rounded containers.
Close up of a Petri dish with blue specimens in it
Aerial view of loyster farm by Ardara, County Donegal - Ireland.
Overnight culture of lactose non-fermenting E.coli STEC O157:H7 producing Shigatoxin. Shiga toxin-producing E.coli (STEC) strains can cause serious illness. Most patients were infected through contaminated food; however STEC can also spread among people and family outbreaks are not uncommon.
Green algae cells background
green milk tea powder
Complement component 3, often simply called C3, is a protein of the immune system. It plays a central role in the complement system and contributes to innate immunity. 3D cartoon and Gaussian surface models with differently colored protein chains, white background.
Photomicrograph of flatworm,
Free Images: "bestof:PDB 3aky EBI.jpg Small proteins Rubredoxin-like Microbial and mitochondrial ADK insert zinc finger domain Microbial and mitochondrial ADK insert zinc finger"
hand-keep-puzzle-finger-fit-523231.jpg
hand-keep-puzzle-finger-fit-523233.jpg
hands-child-insert-tinker-sent-702819.jpg
hand-keep-puzzle-finger-fit-774847.jpg
button-cursor-keyboard-enter-553636.jpg
hand-keep-magnifying-glass-puzzle-982059.jpg
PDB 3aky EBI.jpg
PDB 1dvr EBI.jpg
PDB 1zin EBI.jpg
PDB 1zip EBI.jpg
PDB 1zio EBI.jpg
PDB 1p3j EBI.jpg
PDB 1s3g EBI.jpg
PDB 1e4y EBI.jpg
PDB 1e4v EBI.jpg
PDB 1ake EBI.jpg
PDB 1ank EBI.jpg
PDB 4ake EBI.jpg
PDB 2eck EBI.jpg
PDB 2ak3 EBI.jpg
PDB 1ak2 EBI.jpg
PDB 2ak2 EBI.jpg
PDB 1aky EBI.jpg
PDB 2aky EBI.jpg
PDB 1zak EBI.jpg
PDB 1d0q EBI.jpg
PDB 1n0z EBI.jpg
PDB 2con EBI.jpg
PDB 1wge EBI.jpg
PDB 1yws EBI.jpg
PDB 1yop EBI.jpg
PDB 2gqe EBI.png
PDB 1q5w EBI.jpg
PDB 1nj3 EBI.jpg
PDB 2cr8 EBI.jpg
PDB 2c6b EBI.jpg
PDB 2c6a EBI.jpg
PDB 1k18 EBI.jpg
PDB 1n5g EBI.jpg
PDB 1k0p EBI.jpg
PDB 2cqe EBI.jpg
PDB 1wfl EBI.jpg
PDB 1pxe EBI.jpg
PDB 2dan EBI.jpg
PDB 2d8q EBI.jpg
PDB 2dj8 EBI.jpg
PDB 1x4s EBI.jpg
PDB 1vfy EBI.jpg
PDB 1hyj EBI.jpg
PDB 1hyi EBI.jpg
PDB 1zbd EBI.jpg
PDB 1wfk EBI.jpg
PDB 1y02 EBI.jpg
PDB 1f62 EBI.jpg
PDB 1fp0 EBI.jpg
PDB 1mm3 EBI.jpg
PDB 1mm2 EBI.jpg
PDB 1we9 EBI.jpg
PDB 1wee EBI.jpg
PDB 1wem EBI.jpg
PDB 1wen EBI.jpg
PDB 1weu EBI.jpg
PDB 2jmq EBI.jpg
PDB 1wep EBI.jpg
PDB 1weq EBI.jpg
PDB 1wes EBI.jpg
PDB 1wev EBI.jpg
PDB 1wew EBI.jpg
PDB 1wil EBI.jpg
PDB 1rmd EBI.jpg
PDB 1znf EBI.jpg
PDB 1bhi EBI.jpg
PDB 1ubd EBI.jpg
PDB 2cot EBI.jpg
PDB 1njq EBI.jpg
PDB 2ct5 EBI.jpg
PDB 1dcq EBI.jpg
PDB 1lv3 EBI.jpg
PDB 1pzw EBI.jpg
PDB 1uw0 EBI.jpg
PDB 1xbt EBI.jpg
PDB 2orv EBI.jpg
PDB 2b8t EBI.jpg
PDB 2uz3 EBI.jpg
PDB 1xx6 EBI.jpg
PDB 2fif EBI.jpg
PDB 2fid EBI.jpg
PDB 2c7n EBI.jpg
PDB 2c7m EBI.jpg
PDB 2das EBI.png
PDB 1tjl EBI.jpg
PDB 1dvp EBI.jpg
PDB 1nlt EBI.jpg
PDB 1u5k EBI.jpg
PDB 2znf EBI.jpg
PDB 1bj6 EBI.jpg
PDB 2exf EBI.jpg
PDB 1esk EBI.jpg
PDB 1a1t EBI.jpg
PDB 1mfs EBI.jpg
Terms of Use   Search of the Day