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Diatoms are a major group of algae, and are one of the most common types of phytoplankton. Most diatoms are unicellular, although they can exist as colonies in the shape of filaments or ribbons, fans, zigzags, or stellate colonies.

Diatoms are a major group of algae, and are one of the most common types of phytoplankton. Most diatoms are unicellular, although they can exist as colonies in the shape of filaments or ribbons, fans, zigzags, or stellate colonies.

Muscle fibre, SEM (Scanning Electron Microscope). I changed my mind, I want to be a scientist and study EVERYTHING!

Muscle fibre, SEM (Scanning Electron Microscope). I changed my mind, I want to be a scientist and study EVERYTHING!

Immune system fighting a cancer cell. A killer T-lymphocyte (orange) inducing a cancer cell to undergo Programmed Cell Death.

Immune system fighting a cancer cell. A killer T-lymphocyte (orange) inducing a cancer cell to undergo Programmed Cell Death.

Colored scanning electron micrograph (SEM) of squamous cell carcinoma (cancer) cells from a human mouth. The many blebs (lumps) and microvilli (small projections) on the cells' surfaces are typical of cancer cells.

Colored scanning electron micrograph (SEM) of squamous cell carcinoma (cancer) cells from a human mouth. The many blebs (lumps) and microvilli (small projections) on the cells' surfaces are typical of cancer cells.

These cells line the Choroid Plexus, a layer of tissue that lines the inside of the ventricles of the nervous system.  The swollen tips of these cells secrete the cerebrospinal fluid which bathes the brain in glucose and proteins, and prevents it from collapsing under its own weight.

These cells line the Choroid Plexus, a layer of tissue that lines the inside of the ventricles of the nervous system. The swollen tips of these cells secrete the cerebrospinal fluid which bathes the brain in glucose and proteins, and prevents it from collapsing under its own weight.

Colored TEM of a H. pylori. Magnification: 7,700 at 6x4.5cm size. #Medical #MedSchool

Colored TEM of a H. pylori. Magnification: 7,700 at 6x4.5cm size. #Medical #MedSchool

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