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    Lily stem. Light micrograph(LM) of section through part of lily (Lilium) stem. Thin outer epidermis surrounds layer of cortex. At center is pith, which contains numerous vascular bundles (yellow) — Stock Photo
    Lily stem. Light micrograph(LM) of section through part of lily (Lilium) stem. Thin outer epidermis surrounds layer of cortex. At center is pith, which contains numerous vascular bundles (yellow)
    Areolar connective tissue, light micrograph. — Stock Photo
    Areolar connective tissue, light micrograph.
    Cross-section through a cotton stem — Stock Photo
    Cross-section through a cotton stem
    Human stomach mucinous adenocarcinoma, computer illustration and light micrograph. — Stock Photo
    Human stomach mucinous adenocarcinoma, computer illustration and light micrograph.
    Aphid, light micrograph — Stock Photo
    Aphid, light micrograph
    Colon cancer, digital illustration and light micrograph showing colon adenocarcinoma. — Stock Photo
    Colon cancer, digital illustration and light micrograph showing colon adenocarcinoma.
    Digital illustration and light micrograph of squamous cell carcinoma of lung. — Stock Photo
    Digital illustration and light micrograph of squamous cell carcinoma of lung.
    Section through a nasal polyp — Stock Photo
    Section through a nasal polyp
    Skeletal muscle fibres — Stock Photo
    Skeletal muscle fibres
    Parasitic trematode larva — Stock Photo
    Parasitic trematode larva
    Onion cells undergoing mitosis — Stock Photo
    Onion cells undergoing mitosis
    Light micrograph (LM) of a section through the fingertip. — Stock Photo
    Light micrograph (LM) of a section through the fingertip.
    Light micrograph of rectal papilloma on white background, — Stock Photo
    Light micrograph of rectal papilloma on white background,
    Light micrograph of red blood cells (erythrocytes, red) in a blood vessel. — Stock Photo
    Light micrograph of red blood cells (erythrocytes, red) in a blood vessel.
    Human stomach mucinous adenocarcinoma, computer illustration and light micrograph. — Stock Photo
    Human stomach mucinous adenocarcinoma, computer illustration and light micrograph.
    Human cardiac muscle, light micrograph. — Stock Photo
    Human cardiac muscle, light micrograph.
    Electron micrograph of dental plaque — Stock Photo
    Electron micrograph of dental plaque
    Wilms tumour of the kidney — Stock Photo
    Wilms tumour of the kidney
    Marsh marigold carpel — Stock Photo
    Marsh marigold carpel
    Lobar pneumonia in stage of red hepatisation, digital illustration and light micrograph. — Stock Photo
    Lobar pneumonia in stage of red hepatisation, digital illustration and light micrograph.
    Adenocarcinoma of the sigmoid colon — Stock Photo
    Adenocarcinoma of the sigmoid colon
    Light micrograph (LM) showing blood supply to muscle fibers. — Stock Photo
    Light micrograph (LM) showing blood supply to muscle fibers.
    Human stomach mucinous adenocarcinoma, computer illustration and light micrograph. — Stock Photo
    Human stomach mucinous adenocarcinoma, computer illustration and light micrograph.
    Hair follicles structure — Stock Photo
    Hair follicles structure
    Lobar pneumonia in stage of grey hepatisation or late consolidation, digital illustration and light micrograph. — Stock Photo
    Lobar pneumonia in stage of grey hepatisation or late consolidation, digital illustration and light micrograph.
    Breast with lobular carcinoma — Stock Photo
    Breast with lobular carcinoma
    Section through the cerebellum in the brain — Stock Photo
    Section through the cerebellum in the brain
    Epithelium of a foliate papillae of the tongue — Stock Photo
    Epithelium of a foliate papillae of the tongue
    Human stomach adenocarcinoma, computer illustration and light micrograph. — Stock Photo
    Human stomach adenocarcinoma, computer illustration and light micrograph.
    Structure of islet of langerhans, light micrograph. — Stock Photo
    Structure of islet of langerhans, light micrograph.
    Human cartilage, light micrograph. Cross section of human cartilage bone. Haematoxylin and eosin stain. — Stock Photo
    Human cartilage, light micrograph. Cross section of human cartilage bone. Haematoxylin and eosin stain.
    Squamous carcinoma of the skin — Stock Photo
    Squamous carcinoma of the skin
    Light micrograph of single-celled Amoeba engulfing protozoan Paramecium. — Stock Photo
    Light micrograph of single-celled Amoeba engulfing protozoan Paramecium.
    Villi of the intestine — Stock Photo
    Villi of the intestine
    Lactating breast tissue — Stock Photo
    Lactating breast tissue
    Lime tree stem — Stock Photo
    Lime tree stem
    Leaf epidermis, light micrograph. Leaf epidermis has small pores, called stomata, which open up for photosynthetic gas exchange and transpiration. — Stock Photo
    Leaf epidermis, light micrograph. Leaf epidermis has small pores, called stomata, which open up for photosynthetic gas exchange and transpiration.
    Light micrograph of goblet cells in colon. — Stock Photo
    Light micrograph of goblet cells in colon.
    Appendix showing appendicitis — Stock Photo
    Appendix showing appendicitis
    Human stomach adenocarcinoma, computer illustration and light micrograph. — Stock Photo
    Human stomach adenocarcinoma, computer illustration and light micrograph.
    Colon cancer, digital illustration and light micrograph showing colon adenocarcinoma. — Stock Photo
    Colon cancer, digital illustration and light micrograph showing colon adenocarcinoma.
    Ovarian cells section — Stock Photo
    Ovarian cells section
    Human stomach adenocarcinoma, computer illustration and light micrograph. — Stock Photo
    Human stomach adenocarcinoma, computer illustration and light micrograph.
    Smokers lungs, digital illustration and light micrograph on white background. — Stock Photo
    Smokers lungs, digital illustration and light micrograph on white background.
    Human cardiac tissue, light micrograph. Haematoxylin and eosin stain. — Stock Photo
    Human cardiac tissue, light micrograph. Haematoxylin and eosin stain.
    Structure of islet of langerhans, light micrograph. — Stock Photo
    Structure of islet of langerhans, light micrograph.
    Onion cells undergoing mitosis — Stock Photo
    Onion cells undergoing mitosis
    Oesophageal cancer, computer illustration and light micrograph of cancer tissue. — Stock Photo
    Oesophageal cancer, computer illustration and light micrograph of cancer tissue.
    Parotid salivary gland — Stock Photo
    Parotid salivary gland
    Appendix showing appendicitis — Stock Photo
    Appendix showing appendicitis
    Light micrograph of a section through an aeciospore from a Puccinia sp. rust fungus. — Stock Photo
    Light micrograph of a section through an aeciospore from a Puccinia sp. rust fungus.
    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.
    Lobar pneumonia in stage of grey hepatisation or late consolidation, digital illustration and light micrograph. — Stock Photo
    Lobar pneumonia in stage of grey hepatisation or late consolidation, digital illustration and light micrograph.
    Light micrograph of human testis showing spermatogonia, spermatocytes in meiosis, spermatids, and spermatozoa. Haematoxylin and eosin stain. — Stock Photo
    Light micrograph of human testis showing spermatogonia, spermatocytes in meiosis, spermatids, and spermatozoa. Haematoxylin and eosin stain.
    Seminiferous tubules and lending cells — Stock Photo
    Seminiferous tubules and lending cells
    Electron micrograph of dental plaque — Stock Photo
    Electron micrograph of dental plaque
    Undifferentiated pleomorphic sarcoma of bone — Stock Photo
    Undifferentiated pleomorphic sarcoma of bone
    Asbestos fibres in lung tissue, light micrograph. — Stock Photo
    Asbestos fibres in lung tissue, light micrograph.
    Human cardiac muscle, light micrograph. — Stock Photo
    Human cardiac muscle, light micrograph.
    Human stomach adenocarcinoma, computer illustration and light micrograph. — Stock Photo
    Human stomach adenocarcinoma, computer illustration and light micrograph.