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    Maize root. Light micrograph (LM) of section through root of maize plant (Zea mays) showing typical monocot arrangement of vascular bundles. central vascular cylinder is comprised of central cluster of parenchyma cells — Stock Photo
    Maize root. Light micrograph (LM) of section through root of maize plant (Zea mays) showing typical monocot arrangement of vascular bundles. central vascular cylinder is comprised of central cluster of parenchyma cells
    Top view of multicolored dentist medical glasses with binocular lenses arranged in black box placed on white table in laboratory — Stock Photo
    Top view of multicolored dentist medical glasses with binocular lenses arranged in black box placed on white table in laboratory
    Trachea lining. Coloured transmission electron micrograph (TEM) of a longitudinal section through the lining of the trachea (windpipe), which links the larynx (voicebox) to the lungs — Stock Photo
    Trachea lining. Coloured transmission electron micrograph (TEM) of a longitudinal section through the lining of the trachea (windpipe), which links the larynx (voicebox) to the lungs
    Taste buds. Coloured light micrograph of a section through the tongue, showing taste buds (round, purple). The taste buds are within papillae (projections) located on the surface of the tongue — Stock Photo
    Taste buds. Coloured light micrograph of a section through the tongue, showing taste buds (round, purple). The taste buds are within papillae (projections) located on the surface of the tongue
    Pollen threads and brochosomes — Stock Photo
    Pollen threads and brochosomes
    From above doctor in medical mask and uniform injecting ovum on Petri dish and examining cell through microscope in laboratory of modern fertility clinic — Stock Photo
    From above doctor in medical mask and uniform injecting ovum on Petri dish and examining cell through microscope in laboratory of modern fertility clinic
    Ophthalmologist performing eye surgery on female patient in clinic. — Stock Photo
    Ophthalmologist performing eye surgery on female patient in clinic.
    Colored scanning electron micrograph of pollen grains from convolvulus flower. — Stock Photo
    Colored scanning electron micrograph of pollen grains from convolvulus flower.
    Optician using slit lamp for eye examination preteen girl. — Stock Photo
    Optician using slit lamp for eye examination preteen girl.
    Campylobacter jejuni bacteria — Stock Photo
    Campylobacter jejuni bacteria
    Pollen grains from a bellflower — Stock Photo
    Pollen grains from a bellflower
    Sperm cells in seminiferous tubules — Stock Photo
    Sperm cells in seminiferous tubules
    Male teacher and smiling girl student conducting scientific experiment at microscope in laboratory classroom — Stock Photo
    Male teacher and smiling girl student conducting scientific experiment at microscope in laboratory classroom
    Cute girl experimenting with microscope at home — Stock Photo
    Cute girl experimenting with microscope at home
    Colored scanning electron micrograph of Streptococcus mutans anaerobic bacteria in normal bacteria flora of mouth. — Stock Photo
    Colored scanning electron micrograph of Streptococcus mutans anaerobic bacteria in normal bacteria flora of mouth.
    Resting T lymphocytes. Coloured scanning electron micrograph (SEM) of resting T lymphocytes from a human blood sample. T lymphocytes, or T cells, are a type of white blood cell and components of the body's immune system — Stock Photo
    Resting T lymphocytes. Coloured scanning electron micrograph (SEM) of resting T lymphocytes from a human blood sample. T lymphocytes, or T cells, are a type of white blood cell and components of the body's immune system
    Section of a flower bud — Stock Photo
    Section of a flower bud
    Scientists viewing sample on glass slide under light microscope. — Stock Photo
    Scientists viewing sample on glass slide under light microscope.
    Varicella zoster virus particle — Stock Photo
    Varicella zoster virus particle
    Passion flower pollen — Stock Photo
    Passion flower pollen
    Scale insects. Coloured scanning electron micrograph (SEM) of scale insects (superfamily Coccoidea) on a leaf. This pest feeds on the plant's sap. It secretes a powdery wax coating that protects it against pesticides and predators — Stock Photo
    Scale insects. Coloured scanning electron micrograph (SEM) of scale insects (superfamily Coccoidea) on a leaf. This pest feeds on the plant's sap. It secretes a powdery wax coating that protects it against pesticides and predators
    Midrib of a tea leaf — Stock Photo
    Midrib of a tea leaf
    From above doctor in medical mask and uniform injecting ovum on Petri dish and examining cell through microscope in laboratory of modern fertility clinic — Stock Photo
    From above doctor in medical mask and uniform injecting ovum on Petri dish and examining cell through microscope in laboratory of modern fertility clinic
    Escherichia coli bacteria — Stock Photo
    Escherichia coli bacteria
    Girl homeschooling looking under microscope — Stock Photo
    Girl homeschooling looking under microscope
    Adult female doctor in surgical uniform and sterile mask looking at camera while sitting in clinic — Stock Photo
    Adult female doctor in surgical uniform and sterile mask looking at camera while sitting in clinic
    Close-up of goldsmith examining diamond through loupe in workshop — Stock Photo
    Close-up of goldsmith examining diamond through loupe in workshop
    Light micrograph (bottom left) and computer illustration (top right) of the lining of the stomach, known as the mucosa. — Stock Photo
    Light micrograph (bottom left) and computer illustration (top right) of the lining of the stomach, known as the mucosa.
    Magnified digital illustration of implanted blastocyst cell. — Stock Photo
    Magnified digital illustration of implanted blastocyst cell.
    Attentive female doctor in surgical uniform and sterile mask looking through microscope while operating eye of unrecognizable patient in hospital — Stock Photo
    Attentive female doctor in surgical uniform and sterile mask looking through microscope while operating eye of unrecognizable patient in hospital
    Plant sprouts in Petri dish under light microscope. — Stock Photo
    Plant sprouts in Petri dish under light microscope.
    Female scientist taking sample from culture in Petri dish. — Stock Photo
    Female scientist taking sample from culture in Petri dish.
    Magnified digital illustration of mammary gland cells. — Stock Photo
    Magnified digital illustration of mammary gland cells.
    Kidney glomeruli. Coloured scanning electron micrograph (SEM) of a resin cast of glomeruli capillaries and the larger blood vessels supplying them with blood — Stock Photo
    Kidney glomeruli. Coloured scanning electron micrograph (SEM) of a resin cast of glomeruli capillaries and the larger blood vessels supplying them with blood
    Magnified digital illustration of dendritic cell. — Stock Photo
    Magnified digital illustration of dendritic cell.
    Colored scanning electron micrograph showing urethral epithelium of urethra. — Stock Photo
    Colored scanning electron micrograph showing urethral epithelium of urethra.
    Microbiologist inspecting petri dish and observing bacteria growth. — Stock Photo
    Microbiologist inspecting petri dish and observing bacteria growth.
    Female student using microscope while practicing experiment in lab — Stock Photo
    Female student using microscope while practicing experiment in lab
    Close-up of hands of scientist pipetting sample from culture in Petri dish. — Stock Photo
    Close-up of hands of scientist pipetting sample from culture in Petri dish.
    Skin cancer cell — Stock Photo
    Skin cancer cell
    Colored scanning electron micrograph of Streptococcus mutans anaerobic bacteria in normal bacteria flora of mouth. — Stock Photo
    Colored scanning electron micrograph of Streptococcus mutans anaerobic bacteria in normal bacteria flora of mouth.
    Female scientist researching sample in laboratory. — Stock Photo
    Female scientist researching sample in laboratory.
    Goldsmith examining diamond through loupe in workshop — Stock Photo
    Goldsmith examining diamond through loupe in workshop
    Boy enjoying interactive exhibit at science museum — Stock Photo
    Boy enjoying interactive exhibit at science museum
    Close-up of slide on light microscope stage. — Stock Photo
    Close-up of slide on light microscope stage.
    Side view focused male expert in lab coat gloves examining samples through powerful microscope lenses while working in modern equipped laboratory — Stock Photo
    Side view focused male expert in lab coat gloves examining samples through powerful microscope lenses while working in modern equipped laboratory
    Boy and girl working on school work at home — Stock Photo
    Boy and girl working on school work at home
    Stomach lining. Coloured light micrograph (LM) of the stomach. The lumen is at top (white). The surface of the mucosa consists of simple columnar cells that secrete mucus — Stock Photo
    Stomach lining. Coloured light micrograph (LM) of the stomach. The lumen is at top (white). The surface of the mucosa consists of simple columnar cells that secrete mucus
    Red blood cells aggregated — Stock Photo
    Red blood cells aggregated
    Stomach lining. Coloured scanning electron micrograph (SEM) of the glandular lining (mucosa) of the stomach. The gastric mucosa secretes the digestive enzymes and hydrochloric acid — Stock Photo
    Stomach lining. Coloured scanning electron micrograph (SEM) of the glandular lining (mucosa) of the stomach. The gastric mucosa secretes the digestive enzymes and hydrochloric acid
    Scorpion fly foot — Stock Photo
    Scorpion fly foot
    Scientists preparing blood sample for analysis under light microscope. — Stock Photo
    Scientists preparing blood sample for analysis under light microscope.
    Hair shafts growing from human skin — Stock Photo
    Hair shafts growing from human skin
    Colored scanning electron micrograph of sectioned seminiferous tubule, site of sperm production in human testes. — Stock Photo
    Colored scanning electron micrograph of sectioned seminiferous tubule, site of sperm production in human testes.
    Coloured scanning electron micrograph of surface of prostate cancer cells. — Stock Photo
    Coloured scanning electron micrograph of surface of prostate cancer cells.
    Kidney glomeruli. Coloured scanning electron micrograph (SEM) of a resin cast of glomeruli capillaries and the larger blood vessels supplying them with blood — Stock Photo
    Kidney glomeruli. Coloured scanning electron micrograph (SEM) of a resin cast of glomeruli capillaries and the larger blood vessels supplying them with blood
    Clematis montana pollen — Stock Photo
    Clematis montana pollen
    Close-up of hands of scientist placing slide with human sample under light microscope for medical testing. — Stock Photo
    Close-up of hands of scientist placing slide with human sample under light microscope for medical testing.
    Salivary gland. Light micrograph (LM) of a sectioned gland. The submandibular glands (also called sublingual) are bilateral salivary glands located in the face — Stock Photo
    Salivary gland. Light micrograph (LM) of a sectioned gland. The submandibular glands (also called sublingual) are bilateral salivary glands located in the face
    Asparagus beetle head — Stock Photo
    Asparagus beetle head