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    Hepatic bile duct infected with cocidian protozoa — Stock Photo
    Hepatic bile duct infected with cocidian 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.
    Longitudinal section through smooth muscle — Stock Photo
    Longitudinal section through smooth muscle
    Tongue surface, light micrograph and computer illustration. — Stock Photo
    Tongue surface, light micrograph and computer illustration.
    Lime tree stem — Stock Photo
    Lime tree stem
    Digital illustration and light micrograph of squamous cell carcinoma of lung. — Stock Photo
    Digital illustration and light micrograph of squamous cell carcinoma of lung.
    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.
    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.
    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.
    Duct is lined with pseudostratified epithelium — Stock Photo
    Duct is lined with pseudostratified epithelium
    Microsporum gypseum fungus — Stock Photo
    Microsporum gypseum fungus
    Human blood cells, light micrograph. — Stock Photo
    Human blood cells, light micrograph.
    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.
    Cross-section of spinal cord, light micrograph. — Stock Photo
    Cross-section of spinal cord, light micrograph.
    Wall of a muscular artery — Stock Photo
    Wall of a muscular artery
    Human oesophagus wall — Stock Photo
    Human oesophagus wall
    Light micrograph (LM) showing blood supply to muscle fibers. — Stock Photo
    Light micrograph (LM) showing blood supply to muscle fibers.
    Human kidney tissue, light micrograph. Haematoxylin and eosin stain. — Stock Photo
    Human kidney tissue, light micrograph. Haematoxylin and eosin stain.
    Normal human renal artery — Stock Photo
    Normal human renal artery
    Sciatic nerve showing a bundle of nerve fibres — Stock Photo
    Sciatic nerve showing a bundle of nerve fibres
    Prostate showing a concretion of secretory materials — Stock Photo
    Prostate showing a concretion of secretory materials
    Section through a nasal polyp — Stock Photo
    Section through a nasal polyp
    Colon cancer, digital illustration and light micrograph showing colon adenocarcinoma. — Stock Photo
    Colon cancer, digital illustration and light micrograph showing colon adenocarcinoma.
    Structure of islet of langerhans, light micrograph. — Stock Photo
    Structure of islet of langerhans, light micrograph.
    Light micrograph of a section through skin from the scalp. — Stock Photo
    Light micrograph of a section through skin from the scalp.
    Microfilaria worms in a blood smear — Stock Photo
    Microfilaria worms in a blood smear
    Cross-section of spinal cord, light micrograph. — Stock Photo
    Cross-section of spinal cord, light micrograph.
    Bile duct cellular sctructure — Stock Photo
    Bile duct cellular sctructure
    Colon lining and mucous producing cells — Stock Photo
    Colon lining and mucous producing cells
    Light micrograph (LM) of a section through the fingertip. — Stock Photo
    Light micrograph (LM) of a section through the fingertip.
    Light micrograph of a cross section through a grape vine (Vitis sp.) stem. — Stock Photo
    Light micrograph of a cross section through a grape vine (Vitis sp.) stem.
    Bald scalp cross-section, light micrograph. — Stock Photo
    Bald scalp cross-section, light micrograph.
    Light micrograph of a section through a lymph node affected by Hodgkin's lymphoma. — Stock Photo
    Light micrograph of a section through a lymph node affected by Hodgkin's lymphoma.
    Tongue surface, light micrograph and computer illustration. — Stock Photo
    Tongue surface, light micrograph and computer illustration.
    Sciatic nerve showing a bundle of nerve fibres — Stock Photo
    Sciatic nerve showing a bundle of nerve fibres
    Section of a flower bud — Stock Photo
    Section of a flower bud
    Cross-section through a fallopian tube — Stock Photo
    Cross-section through a fallopian tube
    Structure of islet of langerhans, light micrograph. — Stock Photo
    Structure of islet of langerhans, light micrograph.
    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.
    Lungs cancer, digital illustration showing malignant tumour in lung. — Stock Photo
    Lungs cancer, digital illustration showing malignant tumour in lung.
    Upper lip skin with hair follicles — Stock Photo
    Upper lip skin with hair follicles
    Longitudinal section through smooth muscle — Stock Photo
    Longitudinal section through smooth muscle
    Nerve bundle from the sciatic nerve — Stock Photo
    Nerve bundle from the sciatic nerve
    Unilocular adipose tissue — Stock Photo
    Unilocular adipose tissue
    Human cardiac muscle, light micrograph. Haematoxylin and eosin stain. — Stock Photo
    Human cardiac muscle, light micrograph. Haematoxylin and eosin stain.
    Tendon showing the parallel collagen fibres — Stock Photo
    Tendon showing the parallel collagen fibres
    Secondary liver cancer — Stock Photo
    Secondary liver cancer
    Duct lined with pseudostratified epithelium — Stock Photo
    Duct lined with pseudostratified epithelium
    Platelets in blood vessel — Stock Photo
    Platelets in blood vessel
    Lung cancer, digital illustration and light micrograph of cancerous tissue. — Stock Photo
    Lung cancer, digital illustration and light micrograph of cancerous tissue.
    Human stomach adenocarcinoma, computer illustration and light micrograph. — Stock Photo
    Human stomach adenocarcinoma, computer illustration and light micrograph.
    Elm stem. Light micrograph (LM) of cross-section through woody stem of elm (Ulmus procera) tree. — Stock Photo
    Elm stem. Light micrograph (LM) of cross-section through woody stem of elm (Ulmus procera) tree.
    Male mosquito head — Stock Photo
    Male mosquito head
    Section through an osteoid osteoma — Stock Photo
    Section through an osteoid osteoma
    Thyroid gland showing the follicles — Stock Photo
    Thyroid gland showing the follicles
    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.
    Colon cancer, digital illustration and light micrograph showing colon adenocarcinoma. — Stock Photo
    Colon cancer, digital illustration and light micrograph showing colon adenocarcinoma.
    Kidney with acute nephritis — Stock Photo
    Kidney with acute nephritis
    Section of a muscular artery — Stock Photo
    Section of a muscular artery
    Adenocarcinoma of the endometrium — Stock Photo
    Adenocarcinoma of the endometrium