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rezultatov znotraj
Oseba
Rob Young
Rob Young
British writer
Transmission electron micrograph showing fungal bodies being engulfed by polymorphonuclear leucocytes deep in the corneal stroma. The fungal hyphae within the cells are approximately 1.1nm in diameter.
Transmission electron micrograph showing an abnormal stromal keratocyte in the cornea. This cell shows Golgi apparatus and prominent lipid droplets in the cytoplasm which it appears to be releasing into the surrounding stroma. There are also atypical or f…
Transmission electron micrograph showing a cartilage cell from the tibial cartilage. The cell contains a large round nucleus, a number of mitochondria and some rough endoplasmic reticulum. The cell is situated in a mass of fine collagen fibrils. This sect…
Transmission electron micrograph of herpes simplex virus particles in a basal epithelial cell from a virus induced corneal ulcer. Here the virus particles are sequestered into intracytoplasmic vacuoles. Each particle is approximately 150 nanomatres in dia…
Transmission electron micrograph showing massive corneal stromal disruption including oedema, cell degeneration and fibrin deposition. The field is approximately 26 microns across.
Transmission electron micrograph showing abnormal stromal cells in a rejecting graft. The well developed nucleolus indicates a high level of metabolic activity and the numerous myelin figures and lipid droplets indicate that the cells are active in lipid …
Transmission electron micrograph showing plasma cell undergoing apoptosis. A large nucleus in the centre of the picture is beginning to show chromatin condensation and is surrounded by swollen rough endoplasmic reticulum and mitochondria. The cell at the …
Transmission electron micrograph showing a region of sub surface collagen damage in the vicinity of scleral degeneration. The larger fibrils are approximately 180nm in diameter.
Transmission electron micrograph of a migrating lymphocyte with a large nucleus, lysosomal granule and several prominant mitochondria. It appears to be attached to an intact collagen fibre with its component fibrils seen in transverse section at the top r…
Transmission electron micrograph showing an aberrant Bowman's layer at the site of a peripheral corneal ulcer.The epithelium at the right has lost its columnar, basal structure and contains an inflammatory cell. The basement membrane is absent but the…
Colour-enhanced electron micrograph of a flea. On black background.
Transmission electron micrograph of herpes simplex virus particles in a corneal basal epithelial cell from a virus induced corneal ulcer. Here the virus particles are within intracytoplasmic vacuoles. Each particle is approximately 150 nanomatres in diame…
Transmission electron micrograph showing a transverse section through a nerve fibre in the corneal stroma. The cell contains a nucleus, mitochondria and some rough endoplasmic reticulum. The nerve is passing through the layers of stromal lamellae - layers…
Transmission electron micrograph showing fungal hyphae in the anterior chamber of the eye (lower left of picture). Descemet's membrane is in the centre of the picture and behind this is the posterior stroma with a heavy infiltration of polymorphonucle…
Transmission electron micrograph showing mast cells with detail of the scroll-type cytoplasmic granule structure. Stromal collagen fibrils are also visible. This field is approximately 8 microns across.
Transmission electron micrograph of 2 fibroblasts in cartilage from the knee. The larger cell contains extensive rough endoplasmic reticulum, some Golgi apparatus and pinocytotic and coated vesicles. A mitochondrion and lysosome are also visible. Microfil…
Transmission electron micrograph showing a melanocyte in the conjunctival stroma adjacent to a corneal ulcer. This melanocyte contains many pigment granules towards the periphery of the cell. The surrounding matrix contains normal collagen fibrils.
Transmission electron micrograph showing a meshwork of collagen fibrils typical of Bowman's layer, below the epithelium of the cornea. This field is approximately 4 microns across.
Transmission electron micrograph of a monocytic cell in a deep corneal stromal ulcer. The cell shows a high degree of membrane activity and various organelles. A large nucleus is visible towards the top of the cell and a number of mitochondria can also be…
Transmission electron micrograph showing the peripheral cornea/conjunctiva from a patient with ocular malignant melanoma. The basal epithelium on the right is normal and the stroma on the left contains phagocytic cells some of which contain phagosomes enc…
Transmission electron micrograph of the epithelial surface of the peripheral cornea. These epthelial cells have very few organelles apart from nuclei. They adhere to each other via numerous desmosomes - the black spots along the interfaces between cells. …
Colour-enhanced, transmission electron micrograph of a mass of small lymphocytes in the conjunctiva of a patient with an autoimmune ulceration of the cornea. The cells have large nuclei and numerous mitochondria. A centriole can be seen towards the centre…
Transmission electron micrograph showing an occluded capillary in the sclera of a patient with operation-induced glaucoma. The lumen of this vessel is largely obliterated. The nuclei can be seen in two of the endothelial cells making up the vessel wall. B…
Transmission electron micrograph showing superficial sclera/episclera interface. Two small blood vessels can be seen in transverse section both of which contain red blood cells in their lumina. The basement membranes can clearly be seen beneath the endoth…