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237 results

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    Arachnoidiscus sp. diatom algae — Stock Photo
    Arachnoidiscus sp. diatom algae
    Woodland skipper butterfly — Stock Photo
    Woodland skipper butterfly
    Finger-like projections of the duodenum — Stock Photo
    Finger-like projections of the duodenum
    Blood cells in a blood vessel — Stock Photo
    Blood cells in a blood vessel
    Strands of Actinomyces viscosus — Stock Photo
    Strands of Actinomyces viscosus
    Activated human macrophage — Stock Photo
    Activated human macrophage
    Diatoms single-celled algae — Stock Photo
    Diatoms single-celled algae
    Dendritic cells of immune system — Stock Photo
    Dendritic cells of immune system
    Activated platelets with canalicular system — Stock Photo
    Activated platelets with canalicular system
    White blood cells — Stock Photo
    White blood cells
    Cells undergoing mitosis — Stock Photo
    Cells undergoing mitosis
    Illustration of Lactobacillus colony — Stock Photo
    Illustration of Lactobacillus colony
    Mixed oral bacteria — Stock Photo
    Mixed oral bacteria
    Human eyelash mites — Stock Photo
    Human eyelash mites
    Triceratium sp. diatom algae — Stock Photo
    Triceratium sp. diatom algae
    Triceratium sp. diatom algae — Stock Photo
    Triceratium sp. diatom algae
    Stratified cuboidal epithelium, digital illustration. — Stock Photo
    Stratified cuboidal epithelium, digital illustration.
    Photosynthetic Navicula sp. diatom — Stock Photo
    Photosynthetic Navicula sp. diatom
    Simple squamous epithelium, digital illustration. — Stock Photo
    Simple squamous epithelium, digital illustration.
    House dust mites — Stock Photo
    House dust mites
    Coloured scanning electron micrograph of Staphylococcus aureus bacteria. — Stock Photo
    Coloured scanning electron micrograph of Staphylococcus aureus bacteria.
    Freshwater single diatom — Stock Photo
    Freshwater single diatom
    Stomach infected with parasitic nematode worms — Stock Photo
    Stomach infected with parasitic nematode worms
    Light micrograph of a section through the surface of a tonsil showing the stratified squamous epithelium (pink) and underlying lymphoid tissue. — Stock Photo
    Light micrograph of a section through the surface of a tonsil showing the stratified squamous epithelium (pink) and underlying lymphoid tissue.
    Strands of Actinomyces viscosus — Stock Photo
    Strands of Actinomyces viscosus
    Diatom eukaryotic algae — Stock Photo
    Diatom eukaryotic algae
    Ductal carcinoma of the breast — Stock Photo
    Ductal carcinoma of the breast
    Stagnant water bacteria — Stock Photo
    Stagnant water bacteria
    Rutilaria epsilon diatom — Stock Photo
    Rutilaria epsilon diatom
    Diatom eukaryotic algae — Stock Photo
    Diatom eukaryotic algae
    Villi from the lining of the jejunum — Stock Photo
    Villi from the lining of the jejunum
    Pubic louse, SEM — Stock Photo
    Pubic louse, SEM
    Paramecium ciliate protozoan — Stock Photo
    Paramecium ciliate protozoan
    Section of a flower bud — Stock Photo
    Section of a flower bud
    Intestinal villi projections — Stock Photo
    Intestinal villi projections
    Paramecium ciliate protozoan — Stock Photo
    Paramecium ciliate protozoan
    Metastatic breast cancer — Stock Photo
    Metastatic breast cancer
    Woodland skipper butterfly compound eye — Stock Photo
    Woodland skipper butterfly compound eye
    Bacteriastrum sp. diatom algae — Stock Photo
    Bacteriastrum sp. diatom algae
    Phytoplankton diatom Coscinodiscus sp — Stock Photo
    Phytoplankton diatom Coscinodiscus sp
    Diatoms single-celled algae — Stock Photo
    Diatoms single-celled algae
    Nanoscale spikes formed on gold surface — Stock Photo
    Nanoscale spikes formed on gold surface
    Nanostructures formed on nickel surface — Stock Photo
    Nanostructures formed on nickel surface
    Activated human macrophage — Stock Photo
    Activated human macrophage
    Silica wall of a diatom — Stock Photo
    Silica wall of a diatom
    Streptococcus thermophilus bacteria — Stock Photo
    Streptococcus thermophilus bacteria
    Salt water pennate diatom frustule — Stock Photo
    Salt water pennate diatom frustule
    Light micrograph of goblet cells in colon. — Stock Photo
    Light micrograph of goblet cells in colon.
    Freshwater single diatom — Stock Photo
    Freshwater single diatom
    Human eyelash mites — Stock Photo
    Human eyelash mites
    Activated T lymphocytes and red blood cells on scanning electron micrograph. — Stock Photo
    Activated T lymphocytes and red blood cells on scanning electron micrograph.
    Villi of the intestine — Stock Photo
    Villi of the intestine
    Scientist pointing at scanning electron micrographs of different nanofibre structures. — Stock Photo
    Scientist pointing at scanning electron micrographs of different nanofibre structures.
    Campylobacter jejuni bacteria — Stock Photo
    Campylobacter jejuni bacteria
    Pit formed on metal or semiconductor surface — Stock Photo
    Pit formed on metal or semiconductor surface
    Thyroid gland showing the follicles — Stock Photo
    Thyroid gland showing the follicles
    Scorpion fly foot — Stock Photo
    Scorpion fly foot
    Staphylococcus bacteria cluster — Stock Photo
    Staphylococcus bacteria cluster
    Lung cancer cells — Stock Photo
    Lung cancer cells
    Limescale, coloured scanning electron micrograph (SEM). — Stock Photo
    Limescale, coloured scanning electron micrograph (SEM).