Pyyhkäisyelektronimikroskooppi

Nerve cells. Coloured scanning electron micrograph (SEM) of nerve cells, known as neurones. Nerve cells occur in the brain, spinal cord, and in ganglia. Each nerve cell has a large cell body (brown) with several long processes extending from it. The processes usually consist of one thicker axon and several thinner branched dendrites. The dendrites collect information in the form of nerve impulses from other nerve cells and pass it to the cell body.

Nerve cells. Coloured scanning electron micrograph (SEM) of nerve cells, known as neurones. Nerve cells occur in the brain, spinal cord, and in ganglia. Each nerve cell has a large cell body (brown) with several long processes extending from it. The processes usually consist of one thicker axon and several thinner branched dendrites. The dendrites collect information in the form of nerve impulses from other nerve cells and pass it to the cell body.

Diatom. Coloured scanning electron micrograph (SEM) of a Stephanopyxis sp. diatom.

Diatom. Coloured scanning electron micrograph (SEM) of a Stephanopyxis sp. diatom.

Blood clot. Coloured scanning electron micrograph (SEM) of a blood clot from the inner wall of the left ventricle of a human heart. Red blood cells (erythrocytes) are trapped within a fibrin protein mesh (cream). The fibrin mesh is formed in response to chemicals secreted by platelets (pink), fragments of white blood cells. Clots are formed in response to cardiovascular disease or injuries to blood vessels. Connective tissue (orange) is also seen.

Blood clot. Coloured scanning electron micrograph (SEM) of a blood clot from the inner wall of the left ventricle of a human heart. Red blood cells (erythrocytes) are trapped within a fibrin protein mesh (cream). The fibrin mesh is formed in response to chemicals secreted by platelets (pink), fragments of white blood cells. Clots are formed in response to cardiovascular disease or injuries to blood vessels. Connective tissue (orange) is also seen.

Cochlea from Inner Ear. Color-enhanced SEM of the inside of a guinea pig inner ear showing the hearing organ, or cochlea. Running along the spiral structure are rows of sensory cells which respond to different frequencies of sound. The whole organ is just a few millimeters long.

Cochlea from Inner Ear. Color-enhanced SEM of the inside of a guinea pig inner ear showing the hearing organ, or cochlea. Running along the spiral structure are rows of sensory cells which respond to different frequencies of sound. The whole organ is just a few millimeters long.

21 Foods Under The Microscope

Food Under The Microscope

21 Foods Under The Microscope

Moss spore capsule: Colored Scanning electron micrograph (SEM) of moss (Funaria sp) spore capsule. : pics

Moss spore capsule: Colored Scanning electron micrograph (SEM) of moss (Funaria sp) spore capsule. : pics

Breathtaking Scanning electron micrograph of a stem cell Regenerative therapies such as stem cells have the potential to change the face of medicine over the next 20 years. Description from pinterest.com. I searched for this on bing.com/images

Breathtaking Scanning electron micrograph of a stem cell Regenerative therapies such as stem cells have the potential to change the face of medicine over the next 20 years. Description from pinterest.com. I searched for this on bing.com/images

Micro Monsters: scanning electron microscope images of insects, spiders and   creepy crawlies. A maggot head

Micro Monsters: scanning electron microscope images of insects, spiders and creepy crawlies

Micro Monsters: scanning electron microscope images of insects, spiders and creepy crawlies. A maggot head

Diatom, coloured scanning electron micrograph (SEM). -- David McCarthy

Diatom, coloured scanning electron micrograph (SEM). -- David McCarthy

Coloured scanning electron micrograph (SEM) of rods (blue) and cones (red), the light sensitive cells in a human retina. Rods aid vision in dim light, while cones allow colour vision | Ralph C. Eagle, Jr. | SCIENCE PHOTO LIBRARY

Coloured scanning electron micrograph (SEM) of rods (blue) and cones (red), the light sensitive cells in a human retina. Rods aid vision in dim light, while cones allow colour vision | Ralph C. Eagle, Jr. | SCIENCE PHOTO LIBRARY

Human spinal nerve and center blood vessel, coloured scanning electron micrograph (SEM)

Human Spinal Nerve, Sem

Human spinal nerve and center blood vessel, coloured scanning electron micrograph (SEM)

The Tree of Life: Guest post: Kevin Carpenter on his new microbial photo exhibit at the Exploratorium in SF #SoCool

The Tree of Life: Guest post: Kevin Carpenter on his new microbial photo exhibit at the Exploratorium in SF #SoCool

Caption: Dendritic and T-cells. Coloured Scanning Electron Micrograph (SEM) of two types of protective cell of the human immune system. A large dendritic or Langerhans cell is seen (at lower right) with a T cell attached (at upper left). Dendritic cells are found in the skin. They recognise foreign proteins (antigens) and ingest them into cytoplasmic Birbeck granules. Antigens are then "processed" and secreted out of the cell, to be dealt with by other immune cells.

Caption: Dendritic and T-cells. Coloured Scanning Electron Micrograph (SEM) of two types of protective cell of the human immune system. A large dendritic or Langerhans cell is seen (at lower right) with a T cell attached (at upper left). Dendritic cells are found in the skin. They recognise foreign proteins (antigens) and ingest them into cytoplasmic Birbeck granules. Antigens are then "processed" and secreted out of the cell, to be dealt with by other immune cells.

Nerve bundle. Coloured scanning electron micrograph (SEM) of a freeze-fractured section through a bundle of myelinated nerve fibres. Myelin sheaths (yellow) can be seen surrounding the axons (blue). Perineurium (connective tissue, pink) surrounds the nerve bundle while endoneurium divides the individual fibres.

Nerve bundle. Coloured scanning electron micrograph (SEM) of a freeze-fractured section through a bundle of myelinated nerve fibres. Myelin sheaths (yellow) can be seen surrounding the axons (blue). Perineurium (connective tissue, pink) surrounds the nerve bundle while endoneurium divides the individual fibres.

Human skin outermost layer

Human skin outermost layer

Coloured scanning electron micrograph of the surface of the mineralised cell wall of an unidentified diatom

Coloured scanning electron micrograph of the surface of the mineralised cell wall of an unidentified diatom

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