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    Hypodermic needle (26 gauge) and human blood, coloured scanning electron micrograph (SEM). — Stock Photo
    Hypodermic needle (26 gauge) and human blood, coloured scanning electron micrograph (SEM).
    Finger-like projections of the duodenum — Stock Photo
    Finger-like projections of the duodenum
    Seminiferous tubules and lending cells — Stock Photo
    Seminiferous tubules and lending cells
    Cross-section through a fallopian tube — Stock Photo
    Cross-section through a fallopian tube
    Coloured scanning electron micrograph (SEM) of a freeze-fractured Nasturtium stem, showing numerous vascular bundles (such as at upper centre) with an inner xylem (pink) and outer phloem (yellow). — Stock Photo
    Coloured scanning electron micrograph (SEM) of a freeze-fractured Nasturtium stem, showing numerous vascular bundles (such as at upper centre) with an inner xylem (pink) and outer phloem (yellow).
    Coloured scanning electron micrograph (SEM) of stubble on a man's face. — Stock Photo
    Coloured scanning electron micrograph (SEM) of stubble on a man's face.
    Fractured myelinated nerve fibres — Stock Photo
    Fractured myelinated nerve fibres
    Scanning electron micrograph (SEM) of a PC12 neurone in culture. — Stock Photo
    Scanning electron micrograph (SEM) of a PC12 neurone in culture.
    Blood vessel in the lung — Stock Photo
    Blood vessel in the lung
    Purkinje cells and their dendritic processes — Stock Photo
    Purkinje cells and their dendritic processes
    Coloured scanning electron micrograph (SEM) of human myeloid white blood cells found in bone marrow. — Stock Photo
    Coloured scanning electron micrograph (SEM) of human myeloid white blood cells found in bone marrow.
    Light micrograph (LM) of longitudinal section through a fetal finger tip to show the developing nail. — Stock Photo
    Light micrograph (LM) of longitudinal section through a fetal finger tip to show the developing nail.
    Hyaline cartilage, a semi-rigid connective tissue — Stock Photo
    Hyaline cartilage, a semi-rigid connective tissue
    Section through the cerebellum in the brain — Stock Photo
    Section through the cerebellum in the brain
    Gum tissue with gingivitis — Stock Photo
    Gum tissue with gingivitis
    Midrib of a tea leaf — Stock Photo
    Midrib of a tea leaf
    Fractured myelinated nerve fibres — Stock Photo
    Fractured myelinated nerve fibres
    Adenocarcinoma of the sigmoid colon — Stock Photo
    Adenocarcinoma of the sigmoid colon
    Unilocular adipose tissue — Stock Photo
    Unilocular adipose tissue
    Fatcells structure and anatomy — Stock Photo
    Fatcells structure and anatomy
    Kidney glomerulus and podocyte cells — Stock Photo
    Kidney glomerulus and podocyte cells
    Section through the olfactory epithelium — Stock Photo
    Section through the olfactory epithelium
    Stem cell research — Stock Photo
    Stem cell research
    Close Look At Anatomy Of Leaf — Stock Photo
    Close Look At Anatomy Of Leaf
    Section through the nasal mucosa — Stock Photo
    Section through the nasal mucosa
    Gum tissue with gingivitis — Stock Photo
    Gum tissue with gingivitis
    Fat cells and supportive connective tissue — Stock Photo
    Fat cells and supportive connective tissue
    58-cell blastocyst embryo — Stock Photo
    58-cell blastocyst embryo
    Finger-like projections of the duodenum — Stock Photo
    Finger-like projections of the duodenum
    Blood vessel in the lung — Stock Photo
    Blood vessel in the lung
    Fractured myelinated nerve fibres — Stock Photo
    Fractured myelinated nerve fibres
    Trachea lined with ciliated columnar epithelium — Stock Photo
    Trachea lined with ciliated columnar epithelium
    Visual rendering of Cells — Stock Photo
    Visual rendering of Cells
    Cross-section through a fallopian tube — Stock Photo
    Cross-section through a fallopian tube
    Duct lined with pseudostratified epithelium — Stock Photo
    Duct lined with pseudostratified epithelium
    Multicellular organism visualization — Stock Photo
    Multicellular organism visualization
    Finger-like projections of the duodenum — Stock Photo
    Finger-like projections of the duodenum
    Seminiferous tubules and lending cells — Stock Photo
    Seminiferous tubules and lending cells
    Paranasal sinus epithelium — Stock Photo
    Paranasal sinus epithelium
    Duct lined with pseudostratified epithelium — Stock Photo
    Duct lined with pseudostratified epithelium
    Surface of a fallopian tube — Stock Photo
    Surface of a fallopian tube
    Used surgical swab — Stock Photo
    Used surgical swab
    Epithelium from a fallopian tube — Stock Photo
    Epithelium from a fallopian tube
    Fractured myelinated nerve fibres — Stock Photo
    Fractured myelinated nerve fibres
    Section through the olfactory epithelium — Stock Photo
    Section through the olfactory epithelium
    Visual rendering of Cells — Stock Photo
    Visual rendering of Cells
    Antibody molecular structure — Stock Photo
    Antibody molecular structure
    Surface of a fallopian tube — Stock Photo
    Surface of a fallopian tube
    Purkinje cells and their dendritic processes — Stock Photo
    Purkinje cells and their dendritic processes
    Used surgical swab — Stock Photo
    Used surgical swab
    Cell layers of the retina — Stock Photo
    Cell layers of the retina
    Primary ovarian follicle — Stock Photo
    Primary ovarian follicle
    Fallopian tube cellular structure — Stock Photo
    Fallopian tube cellular structure
    Unilocular adipose tissue — Stock Photo
    Unilocular adipose tissue
    Finger-like projections of the duodenum — Stock Photo
    Finger-like projections of the duodenum
    Duct is lined with pseudostratified epithelium — Stock Photo
    Duct is lined with pseudostratified epithelium
    Nerve cells and nerve network — Stock Photo
    Nerve cells and nerve network
    Blood cells in a blood vessel — Stock Photo
    Blood cells in a blood vessel
    Fractured pancreas tissue — Stock Photo
    Fractured pancreas tissue
    Blood cells in a blood vessel — Stock Photo
    Blood cells in a blood vessel