Nerve fibres, SEM

Kidney glomerulus, SEM

Collagen, SEM

Fallopian tube, SEM

Pancreas tissue, SEM

Foetal vein, SEM

Smell receptors, TEM

Trachea mucous membrane, SEM

Osteocyte bone cell. Coloured scanning electron micrograph (SEM) of an osteocyte bone cell (blue) surrounded by bone tissue (grey). Osteocytes are osteoblasts (bone-producing cells) that have become trapped within bone cavities (lacunae, depressions...

Mesenchymal stem cell. Coloured scanning electron micrograph (SEM) of a human mesenchymal stem cell (MSC). MSCs are multipotent stromal (connective tissue) cells that can differentiate into a variety of cell types, including osteoblasts (bone cells),...

Trachea mucous membrane, SEM

Mesenchymal stem cell. Coloured scanning electron micrograph (SEM) of a human mesenchymal stem cell (MSC). MSCs are multipotent stromal (connective tissue) cells that can differentiate into a variety of cell types, including osteoblasts (bone cells),...

Brain nervous tissue, illustration

Brain nervous tissue, illustration

Alveolar macrophage phagocytosis of E. coli (mammal lung pleural cavity), coloured scanning electron micrograph (SEM). Note the macrophage has short filopodia that extend from the cell and aid in finding bacteria for phagocytosis. A tissue macrophage...

Hypodermic needle (26 gauge) with human blood, coloured scanning electron micrograph (SEM). Red blood cells (RBCs), or erythrocytes, are the most common type of blood cell in vertebrates. They are involved in delivering oxygen to the body tissue. RBCs...

Human red blood cells, coloured scanning electron micrograph (SEM). Red blood cells (RBCs), or erythrocytes, are the most common type of blood cell in vertebrates. They are involved in delivering oxygen to the body tissue. RBCs take up oxygen in the...

Human red blood cells, coloured scanning electron micrograph (SEM). Red blood cells (RBCs), or erythrocytes, are the most common type of blood cell in vertebrates. They are involved in delivering oxygen to the body tissue. RBCs take up oxygen in the...

Human red blood cells, coloured scanning electron micrograph (SEM). Red blood cells (RBCs), or erythrocytes, are the most common type of blood cell in vertebrates. They are involved in delivering oxygen to the body tissue. RBCs take up oxygen in the...

Nerve structure, illustration

Nerve structure, illustration

Nerve structure, illustration

Human red blood cells, activated platelets, and fibrin threads, coloured scanning electron micrograph (SEM). Human red blood cells (RBCs), or erythrocytes, are involved in delivering oxygen to the body tissue. The cytoplasm of RBCs is rich in...

Human hair with dandruff, coloured scanning electron micrograph (SEM). The outer layer of hair (the cuticle) has overlapping scales of keratin. These scales are thought to prevent hairs from matting together. Hair is made up of a fibrous protein...

Cerebellum tissue, light micrograph

Cerebellum tissue, light micrograph

Cerebellum tissue, light micrograph

Alzheimer's disease. Computer illustration of a healthy neuron (left), a neuron with amyloid plaques (yellow, centre), and a dead neuron being digested by microglia cells (red, right).

Coloured SEM of a nerve cell in brain tissue