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    Lung tissue, coloured transmission electron micrograph (TEM). of a pulmonary capillary containing two red blood cells (red) and three platelets (brown). A basement membrane (cyan) surround the endothelium separating it from the alveolar epithelium — Stock Photo
    Lung tissue, coloured transmission electron micrograph (TEM). of a pulmonary capillary containing two red blood cells (red) and three platelets (brown). A basement membrane (cyan) surround the endothelium separating it from the alveolar epithelium
    Lobar pneumonia in stage of congestion and consolidation, digital illustration and light micrograph. — Stock Photo
    Lobar pneumonia in stage of congestion and consolidation, digital illustration and light micrograph.
    Escherichia coli on the surface of human skin — Stock Photo
    Escherichia coli on the surface of human skin
    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
    Coloured scanning electron micrograph (SEM) of the inner lining of the stomach (gastric mucosa). — Stock Photo
    Coloured scanning electron micrograph (SEM) of the inner lining of the stomach (gastric mucosa).
    Colored scanning electron micrograph of breast cancer cell. — Stock Photo
    Colored scanning electron micrograph of breast cancer cell.
    Breast with lobular carcinoma — Stock Photo
    Breast with lobular carcinoma
    Skin cancer cell — Stock Photo
    Skin cancer cell
    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
    Coloured scanning electron micrograph (SEM) of uric acid crystals. — Stock Photo
    Coloured scanning electron micrograph (SEM) of uric acid crystals.
    Coloured scanning electron micrograph of breast cancer cells. — Stock Photo
    Coloured scanning electron micrograph of breast cancer cells.
    Coloured scanning electron micrograph (SEM) of a dental root canal file. — Stock Photo
    Coloured scanning electron micrograph (SEM) of a dental root canal file.
    Scanning electron micrograph (SEM) of a PC12 neurone in culture. — Stock Photo
    Scanning electron micrograph (SEM) of a PC12 neurone in culture.
    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.
    Stomach surface epithelium, light micrograph (LM). The surface epithelium of the stomach is a simple columnar epithelium formed by tall mucous cells that invaginate to form the gastric pits — Stock Photo
    Stomach surface epithelium, light micrograph (LM). The surface epithelium of the stomach is a simple columnar epithelium formed by tall mucous cells that invaginate to form the gastric pits
    Coloured scanning electron micrograph of human cancellous spongy bone tissue. — Stock Photo
    Coloured scanning electron micrograph of human cancellous spongy bone tissue.
    Weevil (Sitophilus sp.), coloured scanning electron micrograph (SEM). This weevil is a major agricultural pest. It primarily attacks stored grains and fruits, feeding on them with its often elongated snout, or rostrum — Stock Photo
    Weevil (Sitophilus sp.), coloured scanning electron micrograph (SEM). This weevil is a major agricultural pest. It primarily attacks stored grains and fruits, feeding on them with its often elongated snout, or rostrum
    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.
    Ductal carcinoma of the breast — Stock Photo
    Ductal carcinoma of the breast
    Human sperm cell, coloured scanning electron micrograph (SEM). — Stock Photo
    Human sperm cell, coloured scanning electron micrograph (SEM).
    Fly larva head anatomy — Stock Photo
    Fly larva head anatomy
    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
    Fossilised fragment of a coccolithotrope skeleton — Stock Photo
    Fossilised fragment of a coccolithotrope skeleton
    Stagnant water bacteria — Stock Photo
    Stagnant water bacteria
    Appendix showing appendicitis — Stock Photo
    Appendix showing appendicitis
    Light micrograph of liver fluke eggs in a fish scale. — Stock Photo
    Light micrograph of liver fluke eggs in a fish scale.
    Coloured scanning electron micrograph (SEM) of a section through a vein in the liver, which is filled with red blood cells (erythrocytes, red). — Stock Photo
    Coloured scanning electron micrograph (SEM) of a section through a vein in the liver, which is filled with red blood cells (erythrocytes, red).
    Microvilli of gallbladder surface — Stock Photo
    Microvilli of gallbladder surface
    Sperm in a fallopian tube. Coloured composition scanning electron micrograph (SEM) of human sperm travelling through a fallopian tube (oviduct) of a female — Stock Photo
    Sperm in a fallopian tube. Coloured composition scanning electron micrograph (SEM) of human sperm travelling through a fallopian tube (oviduct) of a female
    Nerve cells, light micrograph. Haematoxylin and eosin stain. — Stock Photo
    Nerve cells, light micrograph. Haematoxylin and eosin stain.
    Coloured scanning electron micrograph of Phasmarhabditis hermaphrodita microscopic nematode parasite of Rhabditidae. — Stock Photo
    Coloured scanning electron micrograph of Phasmarhabditis hermaphrodita microscopic nematode parasite of Rhabditidae.
    Section through a Pacinian corpuscle — Stock Photo
    Section through a Pacinian corpuscle
    Finger-like projections of the duodenum — Stock Photo
    Finger-like projections of the duodenum
    Diatom eukaryotic algae — Stock Photo
    Diatom eukaryotic algae
    Colored scanning electron micrograph of pollen grains from convolvulus flower. — Stock Photo
    Colored scanning electron micrograph of pollen grains from convolvulus flower.
    Cilia covering the epithelial lining of the nasopharyx — Stock Photo
    Cilia covering the epithelial lining of the nasopharyx
    Adenocarcinoma of the endometrium — Stock Photo
    Adenocarcinoma of the endometrium
    Dense connective tissue, coloured scanning electron micrograph (SEM). — Stock Photo
    Dense connective tissue, coloured scanning electron micrograph (SEM).
    Freshwater single diatom — Stock Photo
    Freshwater single diatom
    Hair follicles of human skin — Stock Photo
    Hair follicles of human skin
    Digital illustration of nerve neurons cells. — Stock Photo
    Digital illustration of nerve neurons cells.
    False-colour transmission electron micrograph (TEM) of human striated muscle. — Stock Photo
    False-colour transmission electron micrograph (TEM) of human striated muscle.
    Colored scanning electron micrograph of starch grains in seed of legume. — Stock Photo
    Colored scanning electron micrograph of starch grains in seed of legume.
    Ovary. Light micrograph (LM) of section through whole ovary. Cortex (outer region) contains numerous corpora lutea (pink) and follicles (purple) at various stages of development — Stock Photo
    Ovary. Light micrograph (LM) of section through whole ovary. Cortex (outer region) contains numerous corpora lutea (pink) and follicles (purple) at various stages of development
    Lymphoma cancer cell — Stock Photo
    Lymphoma cancer cell
    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.
    Pyoderma skin disease — Stock Photo
    Pyoderma skin disease
    Lung tissue, coloured transmission electron micrograph (TEM). — Stock Photo
    Lung tissue, coloured transmission electron micrograph (TEM).
    Illustration of abstract cancer cell with tentacles. — Stock Photo
    Illustration of abstract cancer cell with tentacles.
    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.
    Human cardiac muscle, light micrograph. — Stock Photo
    Human cardiac muscle, light micrograph.
    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.
    Passion flower pollen — Stock Photo
    Passion flower pollen
    Coloured scanning electron micrograph of breast cancer cell. — Stock Photo
    Coloured scanning electron micrograph of breast cancer cell.
    Colored scanning electron micrograph of pollen grain cell from hollyhock hibiscus flower. — Stock Photo
    Colored scanning electron micrograph of pollen grain cell from hollyhock hibiscus flower.
    Protozoan infection in human intestinal lumen — Stock Photo
    Protozoan infection in human intestinal lumen
    Coloured scanning electron micrograph of breast cancer cell. — Stock Photo
    Coloured scanning electron micrograph of breast cancer cell.
    Bacillus megaterium bacterial colony, coloured scanning electron micrograph. — Stock Photo
    Bacillus megaterium bacterial colony, coloured scanning electron micrograph.
    Chronic pyelonephritis, computer illustration and light micrograph — Stock Photo
    Chronic pyelonephritis, computer illustration and light micrograph
    Blood vessel in the lung — Stock Photo
    Blood vessel in the lung