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    Light micrograph of blood cells (mainly B cells, dark purple) in the liver of a patient with lymphocytic leukaemia. — Stock Photo
    Light micrograph of blood cells (mainly B cells, dark purple) in the liver of a patient with lymphocytic leukaemia.
    Phase contrast light micrograph of Paramecium a ciliate protozoan. — Stock Photo
    Phase contrast light micrograph of Paramecium a ciliate protozoan.
    Light micrograph of a section of stomach tissue showing a lesion (centre) caused by a gastric ulcer. — Stock Photo
    Light micrograph of a section of stomach tissue showing a lesion (centre) caused by a gastric ulcer.
    Light micrograph of a section through breast tissue showing mastitis (inflammation) of breast. — Stock Photo
    Light micrograph of a section through breast tissue showing mastitis (inflammation) of breast.
    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.
    Light micrograph (LM) of a section through sunflower(helianthus annuus) tissue showing spiral tracheids, a type of xylem. — Stock Photo
    Light micrograph (LM) of a section through sunflower(helianthus annuus) tissue showing spiral tracheids, a type of xylem.
    Light micrograph (LM). Longitudinal section through the thallus and sporangium of a liverwort (Pellia epiphylla). — Stock Photo
    Light micrograph (LM). Longitudinal section through the thallus and sporangium of a liverwort (Pellia epiphylla).
    Developing pig eye — Stock Photo
    Developing pig eye
    High power light micrograph (LM) of a section through the gills of a mushroom, Agaricus sp. (formerly Psalliota sp.). — Stock Photo
    High power light micrograph (LM) of a section through the gills of a mushroom, Agaricus sp. (formerly Psalliota sp.).
    Light micrograph of a section through the eye of a frog. — Stock Photo
    Light micrograph of a section through the eye of a frog.
    Light micrograph of a section through skin with a neurofibroma tumour (pink, across bottom). — Stock Photo
    Light micrograph of a section through skin with a neurofibroma tumour (pink, across bottom).
    Developing pig eye — Stock Photo
    Developing pig eye
    Light micrograph (LM) of a section through sunflower(helianthus annuus) tissue showing spiral tracheids, a type of xylem. — Stock Photo
    Light micrograph (LM) of a section through sunflower(helianthus annuus) tissue showing spiral tracheids, a type of xylem.
    Light micrograph (LM) showing blood supply to muscle fibers. — Stock Photo
    Light micrograph (LM) showing blood supply to muscle fibers.
    Light micrograph of a longitudinal section through filiform papillae on the tongue surface. — Stock Photo
    Light micrograph of a longitudinal section through filiform papillae on the tongue surface.
    Obelia hydrozoan medusa. Light micrograph (LM) of a medusa (young polyp) from the Obelia geniculata hydroid. — Stock Photo
    Obelia hydrozoan medusa. Light micrograph (LM) of a medusa (young polyp) from the Obelia geniculata hydroid.
    Differential interference contrast light micrograph of different species of fossil unicellular radiolarians (protozoa). — Stock Photo
    Differential interference contrast light micrograph of different species of fossil unicellular radiolarians (protozoa).
    Retina. Light micrograph of a section through the retina showing its 10 layers. — Stock Photo
    Retina. Light micrograph of a section through the retina showing its 10 layers.
    Dark field light micrograph (LM) of freshwater pennate diatoms. — Stock Photo
    Dark field light micrograph (LM) of freshwater pennate diatoms.
    Light micrograph (LM) of a medusa (young polyp) from the Obelia geniculata hydroid. — Stock Photo
    Light micrograph (LM) of a medusa (young polyp) from the Obelia geniculata hydroid.
    Light micrograph of a section through tissue showing an artery (middle ) and a vein (top left). — Stock Photo
    Light micrograph of a section through tissue showing an artery (middle ) and a vein (top left).
    Light micrograph (LM). Longitudinal section through the thallus and sporangium of a liverwort (Pellia epiphylla). — Stock Photo
    Light micrograph (LM). Longitudinal section through the thallus and sporangium of a liverwort (Pellia epiphylla).
    Light micrograph (LM) showing blood supply to muscle fibers. — Stock Photo
    Light micrograph (LM) showing blood supply to muscle fibers.
    Midrib of a tea leaf — Stock Photo
    Midrib of a tea leaf
    Appendix showing appendicitis — Stock Photo
    Appendix showing appendicitis
    Section of the small intestine — Stock Photo
    Section of the small intestine
    High power light micrograph (LM) of a section through the gills of a mushroom, Agaricus sp. (formerly Psalliota sp.). — Stock Photo
    High power light micrograph (LM) of a section through the gills of a mushroom, Agaricus sp. (formerly Psalliota sp.).
    Section through the cerebellum of the brain — Stock Photo
    Section through the cerebellum of the brain
    Cross-section through a cotton stem — Stock Photo
    Cross-section through a cotton stem
    Normal human renal artery — Stock Photo
    Normal human renal artery
    Myelinated nerve fibres — Stock Photo
    Myelinated nerve fibres
    Hair follicles structure — Stock Photo
    Hair follicles structure
    Cross-section through a cotton stem — Stock Photo
    Cross-section through a cotton stem
    Hair follicles structure — Stock Photo
    Hair follicles structure
    Skull affected by Paget's disease — Stock Photo
    Skull affected by Paget's disease
    Section of a flower bud — Stock Photo
    Section of a flower bud
    Tendon showing the parallel collagen fibres — Stock Photo
    Tendon showing the parallel collagen fibres
    Primary ovarian follicle — Stock Photo
    Primary ovarian follicle
    Section of a flower bud — Stock Photo
    Section of a flower bud
    Tendon showing the parallel collagen fibres — Stock Photo
    Tendon showing the parallel collagen fibres
    Microsporum gypseum fungus — Stock Photo
    Microsporum gypseum fungus
    Primary ovarian follicle — Stock Photo
    Primary ovarian follicle
    Appendix showing appendicitis — Stock Photo
    Appendix showing appendicitis
    Section of a flower bud — Stock Photo
    Section of a flower bud
    Male human flea — Stock Photo
    Male human flea
    Lime tree stem — Stock Photo
    Lime tree stem
    Lime tree stem — Stock Photo
    Lime tree stem
    Hair follicles of human skin — Stock Photo
    Hair follicles of human skin
    Lime tree stem — Stock Photo
    Lime tree stem
    Liver fluke Clonorchis sinensis — Stock Photo
    Liver fluke Clonorchis sinensis
    Human head louse — Stock Photo
    Human head louse
    Liver fluke Clonorchis sinensis — Stock Photo
    Liver fluke Clonorchis sinensis
    Villi of the intestine — Stock Photo
    Villi of the intestine
    Lime tree stem — Stock Photo
    Lime tree stem
    Breast with lobular carcinoma — Stock Photo
    Breast with lobular carcinoma
    Large thrombus formation — Stock Photo
    Large thrombus formation
    Villi of the intestine — Stock Photo
    Villi of the intestine
    Breast with lobular carcinoma — Stock Photo
    Breast with lobular carcinoma
    Cells undergoing mitosis — Stock Photo
    Cells undergoing mitosis
    Cells undergoing mitosis — Stock Photo
    Cells undergoing mitosis