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Small world

Fungal Spore Germinating in the Lung - Don Cowan

In Greek, the word “macrophage” means “big eaters,” which is exactly what macrophages do. They are notably large cells whose job, as part of the innate immune response, is to engulf and digest cellular debris and invasive pathogens. They also stimulate other components of the immune system.

Inner ear hair cells. Coloured scanning electron micrograph (SEM) of sensory hair cells from the inner ear. These cells are surrounded by a fluid called endolymph. As sound enters the ear it causes waves to form in the endolymph, which in turn cause the hairs to move. The movement is converted to an electrical signal that is passed on to the brain. Each crescent-shaped arrangement of hairs lies atop a single cell.

Middle ear bone. Coloured scanning electron micrograph (SEM) of the human middle ear, showing the stapes (ring-shaped). The stapes is one of three bones (known as the ossicles) in the middle ear that conduct sound waves from the outer ear to the inner ear. Vibrations from the eardrum are passed to the malleus and then the stapes via the incus. The stapes transmits these vibrations to the fluid-filled cochlear of the inner ear where they are converted to nerve impulses. Magnification: x100 when p

Brain lining. Coloured scanning electron micrograph (SEM) of the lining of the brain, showing the ciliary hairs (orange) of ependymal cells. Ependymal cells are a type of neuroglia (glial cells) that line the ventricles of the brain and produce cerebrospinal fluid (CSF). CSF has a number of functions, including buffering the brain from shock, transporting hormones around the brain and absorbing waste products. The ciliary hairs are used to help circulate the CSF. Magnification: x2000 when printe

Brain lining. Coloured scanning electron micrograph (SEM) of the lining of the brain, showing the ciliary hairs (orange) of ependymal cells. Ependymal cells are a type of neuroglia (glial cells) that line the ventricles of the brain and produce cerebrospinal fluid (CSF). CSF has a number of functions, including buffering the brain from shock, transporting hormones around the brain and absorbing waste products. The ciliary hairs are used to help circulate the CSF. Magnification: x2000 when printe

Retina. Coloured scanning electron micrograph (SEM) of rods (yellow) and cones (green) in the retina of the eye. The outer nuclear layer is purple. Magnification x1800 when printed at 10 centimetres wide. [F0010041]

An image of a hydrothermal worm taken at 525 times magnification under a scanning electron microscope. No photoshopping. Hydrothermal worms are deep sea creatures, almost as small as bacterium, and are largely found near hydrothermal vents in the ocean.

A scanning electron microscope image of spider silk glands making a thread originally from Dennis Kunkel Microscopy.

Heart strings (chordae tendineae in a human heart ventricle).

This microscopic view is of a nerve broken open to reveal vesicles with chemicals used to pass messages.

electron microscopic pic of snow crystal

electron microscopic pic of snow crystal