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    E. coli bacteria, illustration. Escherichia coli is a rod-shaped bacterium (bacillus). Its cell membrane is covered in fine filaments called pili or fimbriae — Stock Photo
    E. coli bacteria, illustration. Escherichia coli is a rod-shaped bacterium (bacillus). Its cell membrane is covered in fine filaments called pili or fimbriae
    Lymphocytes attacking a cancer cell — Stock Photo
    Lymphocytes attacking a cancer cell
    Male skeleton part with visible cervical spine, computer illustration. — Stock Photo
    Male skeleton part with visible cervical spine, computer illustration.
    Arteries in transparent dog body, anatomical computer illustration. — Stock Photo
    Arteries in transparent dog body, anatomical computer illustration.
    Dust mite parasite, microscopic digital illustration. — Stock Photo
    Dust mite parasite, microscopic digital illustration.
    Abstract male head and neck bones, computer illustration. — Stock Photo
    Abstract male head and neck bones, computer illustration.
    Anthrax bacteria structure — Stock Photo
    Anthrax bacteria structure
    Human fetus at week 32, realistic digital illustration. — Stock Photo
    Human fetus at week 32, realistic digital illustration.
    Red colored uterus in female body, computer illustration. — Stock Photo
    Red colored uterus in female body, computer illustration.
    Male anatomy showing Flexor hallucis muscle, computer illustration. — Stock Photo
    Male anatomy showing Flexor hallucis muscle, computer illustration.
    Illustration of male office worker painful muscles. — Stock Photo
    Illustration of male office worker painful muscles.
    St. Louis encephalitis virus particles, computer illustration — Stock Photo
    St. Louis encephalitis virus particles, computer illustration
    Elm stem. Light micrograph (LM) of cross-section through woody stem of elm (Ulmus procera) tree. — Stock Photo
    Elm stem. Light micrograph (LM) of cross-section through woody stem of elm (Ulmus procera) tree.
    3d rendered illustration of skeleton in silhouette of male cyclist on black background. — Stock Photo
    3d rendered illustration of skeleton in silhouette of male cyclist on black background.
    Female body model with red colored Triceps muscle, computer illustration. — Stock Photo
    Female body model with red colored Triceps muscle, computer illustration.
    Female upper body blood vessels, digital illustration. — Stock Photo
    Female upper body blood vessels, digital illustration.
    Flu viruses, computer illustration — Stock Photo
    Flu viruses, computer illustration
    Bifidobacterium bacteria, computer illustration. Bifidobacteria are Gram-positive anaerobic bacteria that live in gastrointestinal tract, vagina and mouth — Stock Photo
    Bifidobacterium bacteria, computer illustration. Bifidobacteria are Gram-positive anaerobic bacteria that live in gastrointestinal tract, vagina and mouth
    Close-up of grape hyacinth flower on pink background. — Stock Photo
    Close-up of grape hyacinth flower on pink background.
    Illustration of red human embryo on black background at pregnancy stage of week 20. — Stock Photo
    Illustration of red human embryo on black background at pregnancy stage of week 20.
    Digital illustration of Escherichia coli bacteria. — Stock Photo
    Digital illustration of Escherichia coli bacteria.
    Yellow rod-shaped Citrobacter bacteria, digital illustration. — Stock Photo
    Yellow rod-shaped Citrobacter bacteria, digital illustration.
    Conceptual digital illustration showing Giardia intestinalis parasites in drop of water from dirty tap. — Stock Photo
    Conceptual digital illustration showing Giardia intestinalis parasites in drop of water from dirty tap.
    Intermediate cuneiform bone in transparent human body, computer illustration. — Stock Photo
    Intermediate cuneiform bone in transparent human body, computer illustration.
    Scientist hand holding micro-centrifuge tube containing biological sample. — Stock Photo
    Scientist hand holding micro-centrifuge tube containing biological sample.
    Dog silhouette with visible skeleton on white background, digital illustration. — Stock Photo
    Dog silhouette with visible skeleton on white background, digital illustration.
    Human skeleton with red colored Splenius capitis muscle, computer illustration. — Stock Photo
    Human skeleton with red colored Splenius capitis muscle, computer illustration.
    Tendon, coloured scanning electron micrograph showing bundles of collagen fibres. — Stock Photo
    Tendon, coloured scanning electron micrograph showing bundles of collagen fibres.
    Digital illustration of human hair with dandruff. — Stock Photo
    Digital illustration of human hair with dandruff.
    Illustration of lumbar spine in human skeleton. — Stock Photo
    Illustration of lumbar spine in human skeleton.
    Conceptual computer Illustration of human heart anatomy. — Stock Photo
    Conceptual computer Illustration of human heart anatomy.
    Illustration of female silhouette with inflamed heart. — Stock Photo
    Illustration of female silhouette with inflamed heart.
    Frontal illustration of blue silhouette of obese woman with highlighted heart on black background. — Stock Photo
    Frontal illustration of blue silhouette of obese woman with highlighted heart on black background.
    Anatomy of stomach in abstract male body, computer illustration. — Stock Photo
    Anatomy of stomach in abstract male body, computer illustration.
    3D rendering of human spine, computer illustration. — Stock Photo
    3D rendering of human spine, computer illustration.
    Head anatomy, computer illustration — Stock Photo
    Head anatomy, computer illustration
    Human fetus developing at week 5, computer illustration. — Stock Photo
    Human fetus developing at week 5, computer illustration.
    Human skeleton with red colored Piriformis muscle, digital illustration. — Stock Photo
    Human skeleton with red colored Piriformis muscle, digital illustration.
    Male body silhouette with visible hip pain, digital illustration. — Stock Photo
    Male body silhouette with visible hip pain, digital illustration.
    Colorful digital illustration of neural network of nervous system in human brain. — Stock Photo
    Colorful digital illustration of neural network of nervous system in human brain.
    Illustration of dividing human egg cell. — Stock Photo
    Illustration of dividing human egg cell.
    Patient undergoing a skin prick test in allergy clinic. — Stock Photo
    Patient undergoing a skin prick test in allergy clinic.
    Structure of white blood cell — Stock Photo
    Structure of white blood cell
    Tau protein in Alzheimers disease, medical illustration. — Stock Photo
    Tau protein in Alzheimers disease, medical illustration.
    Digital illustration of senior man anatomy showing heart. — Stock Photo
    Digital illustration of senior man anatomy showing heart.
    Lumbar nerves in abstract female silhouette, computer illustration. — Stock Photo
    Lumbar nerves in abstract female silhouette, computer illustration.
    Human skeleton with red colored Rectus femoris muscle, digital illustration. — Stock Photo
    Human skeleton with red colored Rectus femoris muscle, digital illustration.
    Illustration of elbow replacement prosthesis on blue background. — Stock Photo
    Illustration of elbow replacement prosthesis on blue background.
    Human silhouette with lungs infected by pneumonia caused by flu, illustration. — Stock Photo
    Human silhouette with lungs infected by pneumonia caused by flu, illustration.
    Illustration of overweight woman with visible heart on black background. — Stock Photo
    Illustration of overweight woman with visible heart on black background.
    Pinned fractured hip — Stock Photo
    Pinned fractured hip
    Close-up illustration of trachea in male body silhouette, close-up. — Stock Photo
    Close-up illustration of trachea in male body silhouette, close-up.
    Lymphatic system of male upper body, computer illustration. — Stock Photo
    Lymphatic system of male upper body, computer illustration.
    DNA autoradiograph pattern, digital illustration. — Stock Photo
    DNA autoradiograph pattern, digital illustration.
    Close-up of laboratory technician writing on test tube. — Stock Photo
    Close-up of laboratory technician writing on test tube.
    Covid-19 coronavirus particle, computer illustration. The new coronavirus SARS-CoV-2 (previously 2019-CoV) emerged in Wuhan, China, in December 2019 — Stock Photo
    Covid-19 coronavirus particle, computer illustration. The new coronavirus SARS-CoV-2 (previously 2019-CoV) emerged in Wuhan, China, in December 2019
    3d rendered illustration of human nerve cell on blue background. — Stock Photo
    3d rendered illustration of human nerve cell on blue background.
    Colonies of Penicillium fungi grown on Sabouraud Dextrose Agar and digital illustration of fungal morphology. — Stock Photo
    Colonies of Penicillium fungi grown on Sabouraud Dextrose Agar and digital illustration of fungal morphology.
    Low angle view illustration of blue silhouette of obese woman with highlighted liver on black background. — Stock Photo
    Low angle view illustration of blue silhouette of obese woman with highlighted liver on black background.
    Female scientist working with test tube. — Stock Photo
    Female scientist working with test tube.