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    Coloured transmission electron micrograph (TEM) of a transverse section through an artery. — Stock Photo
    Coloured transmission electron micrograph (TEM) of a transverse section through an artery.
    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).
    Light micrograph (LM) of a vertical section through the pseudostratified columnar epithelium from the trachea, the tube in the throat leading from the mouth to the bronchus and the lungs. — Stock Photo
    Light micrograph (LM) of a vertical section through the pseudostratified columnar epithelium from the trachea, the tube in the throat leading from the mouth to the bronchus and the lungs.
    Zika virus particles — Stock Photo
    Zika virus particles
    Trachea (wind pipe) lining, coloured scanning electron micrograph (SEM). — Stock Photo
    Trachea (wind pipe) lining, coloured scanning electron micrograph (SEM).
    Hair follicles of human skin — Stock Photo
    Hair follicles of human skin
    Thyroid gland showing the follicles — Stock Photo
    Thyroid gland showing the follicles
    Coloured scanning electron micrograph (SEM) of the surface of a squamous epithelial cell from the ureter. — Stock Photo
    Coloured scanning electron micrograph (SEM) of the surface of a squamous epithelial cell from the ureter.
    Microvilli of gallbladder surface — Stock Photo
    Microvilli of gallbladder surface
    Coloured scanning electron micrograph (SEM) of squamous epithelial cells on the skin surface. — Stock Photo
    Coloured scanning electron micrograph (SEM) of squamous epithelial cells on the skin surface.
    Microvilli from the small intestine — Stock Photo
    Microvilli from the small intestine
    Female reproductive system and Gardnerella vaginalis bacteria attached to vaginal epithelial cells causing bacterial vaginosis, digital illustration. — Stock Photo
    Female reproductive system and Gardnerella vaginalis bacteria attached to vaginal epithelial cells causing bacterial vaginosis, digital illustration.
    Mouse mammary tumour virus (MMTV) particles (blue), coloured transmission electron micrograph (TEM). MMTV induces malignant tumours in the mammary glands of certain strains of laboratory mice — Stock Photo
    Mouse mammary tumour virus (MMTV) particles (blue), coloured transmission electron micrograph (TEM). MMTV induces malignant tumours in the mammary glands of certain strains of laboratory mice
    Trachea (wind pipe) lining, coloured scanning electron micrograph (SEM). — Stock Photo
    Trachea (wind pipe) lining, coloured scanning electron micrograph (SEM).
    Prostate tissue showing Iadenocarcinoma — Stock Photo
    Prostate tissue showing Iadenocarcinoma
    Female reproductive system and Gardnerella vaginalis bacteria attached to vaginal epithelial cells causing bacterial vaginosis, digital illustration. — Stock Photo
    Female reproductive system and Gardnerella vaginalis bacteria attached to vaginal epithelial cells causing bacterial vaginosis, digital illustration.
    Magnified digital illustration of fertilisation of egg cell. — Stock Photo
    Magnified digital illustration of fertilisation of egg cell.
    Anatomy of the structure and layers of the stomach wall — Stock Photo
    Anatomy of the structure and layers of the stomach wall
    Coloured scanning electron micrograph (SEM) of a section through a foetal vein filled with red blood cells (erythrocytes, red). — Stock Photo
    Coloured scanning electron micrograph (SEM) of a section through a foetal vein filled with red blood cells (erythrocytes, red).
    Epithelial lining of Fallopian tube — Stock Photo
    Epithelial lining of Fallopian tube
    Female reproductive system and Gardnerella vaginalis bacteria attached to vaginal epithelial cells causing bacterial vaginosis, digital illustration. — Stock Photo
    Female reproductive system and Gardnerella vaginalis bacteria attached to vaginal epithelial cells causing bacterial vaginosis, digital illustration.
    Female reproductive system and Gardnerella vaginalis bacteria attached to vaginal epithelial cells causing bacterial vaginosis, digital illustration. — Stock Photo
    Female reproductive system and Gardnerella vaginalis bacteria attached to vaginal epithelial cells causing bacterial vaginosis, digital illustration.
    Gall bladder lining — Stock Photo
    Gall bladder lining
    Carcinoma cell, coloured transmission electron micrograph (TEM). — Stock Photo
    Carcinoma cell, coloured transmission electron micrograph (TEM).
    Section through a thyroid gland — Stock Photo
    Section through a thyroid gland
    Smear from oral cavity showing oral trichomonas and buccal epithelial cells, digital illustration. — Stock Photo
    Smear from oral cavity showing oral trichomonas and buccal epithelial cells, digital illustration.
    Smear from oral cavity showing oral trichomonas and buccal epithelial cells, digital illustration. — Stock Photo
    Smear from oral cavity showing oral trichomonas and buccal epithelial cells, digital illustration.
    Human oesophagus wall — Stock Photo
    Human oesophagus wall
    Coloured scanning electron micrograph (SEM) of squamous epithelial cells on the skin surface. — Stock Photo
    Coloured scanning electron micrograph (SEM) of squamous epithelial cells on the skin surface.
    Cilia covering the epithelial lining of the nasopharyx — Stock Photo
    Cilia covering the epithelial lining of the nasopharyx
    Fallopian tube, TEM — Stock Photo
    Fallopian tube, TEM
    Ductal carcinoma of the breast — Stock Photo
    Ductal carcinoma of the breast
    Female reproductive system and Gardnerella vaginalis bacteria attached to vaginal epithelial cells causing bacterial vaginosis, digital illustration. — Stock Photo
    Female reproductive system and Gardnerella vaginalis bacteria attached to vaginal epithelial cells causing bacterial vaginosis, digital illustration.
    Magnified digital illustration of fertilisation of egg cell. — Stock Photo
    Magnified digital illustration of fertilisation of egg cell.
    Carcinoma cell, coloured transmission electron micrograph (TEM). — Stock Photo
    Carcinoma cell, coloured transmission electron micrograph (TEM).
    Streptococcus thermophilus bacteria — Stock Photo
    Streptococcus thermophilus bacteria
    Ductal carcinoma of the breast — Stock Photo
    Ductal carcinoma of the breast
    Female reproductive system and Gardnerella vaginalis bacteria attached to vaginal epithelial cells causing bacterial vaginosis, digital illustration. — Stock Photo
    Female reproductive system and Gardnerella vaginalis bacteria attached to vaginal epithelial cells causing bacterial vaginosis, digital illustration.
    Carcinoma cell, coloured transmission electron micrograph (TEM). — Stock Photo
    Carcinoma cell, coloured transmission electron micrograph (TEM).
    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).
    Light micrograph of a buccal mucosa cell. This cell lines the cheeks and the back of the lips. — Stock Photo
    Light micrograph of a buccal mucosa cell. This cell lines the cheeks and the back of the lips.
    Smear from oral cavity showing oral trichomonas and buccal epithelial cells, digital illustration. — Stock Photo
    Smear from oral cavity showing oral trichomonas and buccal epithelial cells, digital illustration.
    Mouse mammary tumour virus (MMTV) particles (blue), coloured transmission electron micrograph (TEM). MMTV induces malignant tumours in the mammary glands of certain strains of laboratory mice — Stock Photo
    Mouse mammary tumour virus (MMTV) particles (blue), coloured transmission electron micrograph (TEM). MMTV induces malignant tumours in the mammary glands of certain strains of laboratory mice
    Cilia covering the epithelial lining of the nasopharyx — Stock Photo
    Cilia covering the epithelial lining of the nasopharyx
    Thyroid gland showing the follicles — Stock Photo
    Thyroid gland showing the follicles
    Microvilli from the small intestine — Stock Photo
    Microvilli from the small intestine
    Layer of cells, light micrograph and computer illustration. — Stock Photo
    Layer of cells, light micrograph and computer illustration.
    Epithelium from a fallopian tube — Stock Photo
    Epithelium from a fallopian tube
    Smear from oral cavity showing oral trichomonas and buccal epithelial cells, digital illustration. — Stock Photo
    Smear from oral cavity showing oral trichomonas and buccal epithelial cells, digital illustration.