spermatogenesis

spermatogenesis

Scanning electron micrograph (SEM) of an inner ear hair cell.

Scanning electron micrograph (SEM) of an inner ear hair cell.

Human Muscle Tendon seen using a scanning electron micrograph (SEM), which shows bundles of collagen fibres.

Human Muscle Tendon seen using a scanning electron micrograph (SEM), which shows bundles of collagen fibres.

A scanning electron microscope picture of a nerve ending. It has been broken open to reveal vesicles (orange and blue) containing chemicals used to pass messages in the nervous system.

A scanning electron microscope picture of a nerve ending. It has been broken open to reveal vesicles (orange and blue) containing chemicals used to pass messages in the nervous system.

Harvard scientists map most complicated terrain in the universe - the inside of the human brain

Land of dreams: Harvard scientists map most complicated terrain in the universe - the inside of the brain

Harvard scientists map most complicated terrain in the universe - the inside of the human brain

Human egg cell

Human egg cell

Human tongue surface, coloured scanning electron micrograph (SEM). Covering the tongue's surface are scale-like projections called filiform papillae, which sense pressure. The round areas (purple) are fungiform papillae which contain the taste buds.

Human tongue surface, coloured scanning electron micrograph (SEM). Covering the tongue's surface are scale-like projections called filiform papillae, which sense pressure. The round areas (purple) are fungiform papillae which contain the taste buds.

Cliffs? Muscle fibre, electron microscope.

Cliffs? Muscle fibre, electron microscope.

Tongue showing taste bud, filiform papillae and fungiform papillae. SEM.

Tongue showing taste bud, filiform papillae and fungiform papillae. SEM.

Coloured SEM image of a coronary artery teeming with red blood cells (centre).  Image Source: Science Photo Library.

Coloured SEM image of a coronary artery teeming with red blood cells (centre). Image Source: Science Photo Library.

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