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.

Candida albicans yeast cells. Coloured scanning electron micrograph (SEM) of C. albicans cells present in a urine sample taken from someone with a urinary tract infection (UTI). C. albicans is a single-celled fungus that is commonly found on the skin and the mucous membranes of the mouth, digestive and respiratory tracts, and the vagina, where it is usually harmless. However, the use of antibiotics or a suppressed immune system can lead to infection. Common candida infections include oral…

Candida albicans yeast cells. Coloured scanning electron micrograph (SEM) of C. albicans cells present in a urine sample taken from someone with a urinary tract infection (UTI). C. albicans is a single-celled fungus that is commonly found on the skin and the mucous membranes of the mouth, digestive and respiratory tracts, and the vagina, where it is usually harmless. However, the use of antibiotics or a suppressed immune system can lead to infection. Common candida infections include oral…

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.

Microscopic image of Bacteria on Human Tongue

Microscopic image of Bacteria on Human Tongue

Salmonella Bacteria - These guys cause a lot of disease including the most well known typhoid fever...

Salmonella Bacteria - These guys cause a lot of disease including the most well known typhoid fever...

Cell biology-Nasopharynx surface showing microvilli on the surface of stratified squamous nasal epithelial cells. The tiny microvilli increase the cell surface area and likely aid in localizing foreign debris coming from the nose detected by immune cells. Mucus secreted by cells in the epithelial lining (not seen) traps foreign objects such as bacteria, preventing them from entering the lungs. SEM X2000.

Cell biology-Nasopharynx surface showing microvilli on the surface of stratified squamous nasal epithelial cells. The tiny microvilli increase the cell surface area and likely aid in localizing foreign debris coming from the nose detected by immune cells. Mucus secreted by cells in the epithelial lining (not seen) traps foreign objects such as bacteria, preventing them from entering the lungs. SEM X2000.

Wound scab. SEM of keratinocytes (red) at the site of a skin wound. Keratinocytes are skin cells that contain the protein keratin. They migrate to the site of a wound and form accumulating layers that form the hard protective object called a scab.

Wound scab. SEM of keratinocytes (red) at the site of a skin wound. Keratinocytes are skin cells that contain the protein keratin. They migrate to the site of a wound and form accumulating layers that form the hard protective object called a scab.

Inner ear hair cells. Coloured scanning electron micrograph (SEM) of sensory hair cells from the organ of Corti, in the cochlea of a mammalian inner ear. Each V-shaped arrangement of hairs lies on the top of a single cell.

Inner ear hair cells. Coloured scanning electron micrograph (SEM) of sensory hair cells from the organ of Corti, in the cochlea of a mammalian inner ear. Each V-shaped arrangement of hairs lies on the top of a single cell.

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