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Cryptosporidium protozoa

Nerve fiber node. Colored TEM cross-section through a nerve fiber at a node of Ranvier. The axon (blue) is surrounded by a fatty insulating sheath of myelin (green), which increases the speed of the nerve signal. ©Thomas Deerinck, NCMIR/Science Source #neuron #micrograph #scienceimages #stockphotos #ScienceSource

Heart valve and strings, colored SEM. This is the tricuspid valve (upper right), seen from the right ventricle of the heart

light micrograph

Sensory hair cells in the inner ear, SEM SUSUMU NISHINAGA.

Transmission electron micrograph. A freshwater to brackish water diatom Stephanodiscus tenuis

Bone tissue (imaged using a scanning electron microscope [SEM])

Goblet cells- they make your mucous.

Flu (influenza) virus particles (blue) on red blood cells

Red blood cells

Ruptured venule. Colored (SEM) showing stacks (rouleaux) of red blood cells exposed inside a torn venule.

A wound. Red blood cells, neutrophils, macrophages and mast cells.

An image of capillary, just wide enough for one red blood cell (erythrocyte) to squeeze through.

Staphylococcus aureus

Colored SEM of a ruptured venule running through fatty tissue. Stacked red blood cells (rouleaux formation) and white blood cells are seen within the venule. 1050x

SEM image of blood clot

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.

Paramecium caudatum, a ciliate protozoa under a light microscope