Antigen - In den Körper dringende  werden zunächst von Mastzellen aufgenommen und bewirken, dass spezielle Lymphozyten (T-Helfer- und B-Zell...

Antigen - In den Körper dringende werden zunächst von Mastzellen aufgenommen und bewirken, dass spezielle Lymphozyten (T-Helfer- und B-Zell...

Lymphozyten (B und T Zellen)

Lymphozyten (B und T Zellen)

T Lymphozyten B Lymphozyten

T Lymphozyten B Lymphozyten

SEM Images  Human Red and White Blood Cells  Ref: 80200662    View      Description:  Coloured scanning electron micrograph (SEM) of human blood showing red and white cells. Magnification x5167 at an image size of 10 cm wide

SEM Images Human Red and White Blood Cells Ref: 80200662 View Description: Coloured scanning electron micrograph (SEM) of human blood showing red and white cells. Magnification x5167 at an image size of 10 cm wide

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.

Martin Oeggerli  Fibrin is a protein created by the body that works with platelets in the blood to clot a wound. As they reach the wound site, they attach themselves to fibers, and create a mesh. Working with the platelets, they make a scab that covers the wound until it heals. Though, with the naked eye you would never guess that the process looks like this.

Martin Oeggerli Fibrin is a protein created by the body that works with platelets in the blood to clot a wound. As they reach the wound site, they attach themselves to fibers, and create a mesh. Working with the platelets, they make a scab that covers the wound until it heals. Though, with the naked eye you would never guess that the process looks like this.

White blood cell englufing yeast cell. (Phagocytosis. Colored Scanning Electron Micrograph (SEM) of a cultured lymphocyte phagocytosing (eng...

White blood cell englufing yeast cell. (Phagocytosis. Colored Scanning Electron Micrograph (SEM) of a cultured lymphocyte phagocytosing (eng...

Blood clot. Coloured scanning electron micrograph (SEM) of a blood clot from the inner wall of the left ventricle of a human heart. Red blood cells (erythrocytes) are trapped within a fibrin protein mesh (cream). The fibrin mesh is formed in response to chemicals secreted by platelets (pink), fragments of white blood cells. Clots are formed in response to cardiovascular disease or injuries to blood vessels. Connective tissue (orange) is also seen.

Blood clot. Coloured scanning electron micrograph (SEM) of a blood clot from the inner wall of the left ventricle of a human heart. Red blood cells (erythrocytes) are trapped within a fibrin protein mesh (cream). The fibrin mesh is formed in response to chemicals secreted by platelets (pink), fragments of white blood cells. Clots are formed in response to cardiovascular disease or injuries to blood vessels. Connective tissue (orange) is also seen.

Electron micrograph of a cross-section of muscle tissue. It is surrounded by the extracellular tissue that acts as the connective tissue. Each muscle fiber is joined together by the connective tissue to make up the complete muscle. Image by Martin Oeggerli

Electron micrograph of a cross-section of muscle tissue. It is surrounded by the extracellular tissue that acts as the connective tissue. Each muscle fiber is joined together by the connective tissue to make up the complete muscle. Image by Martin Oeggerli

Heart valve and strings, coloured scanning electron micrograph (SEM). This is the tricuspid valve (upper right), seen from the right ventricle of the heart

Heart valve and strings, coloured scanning electron micrograph (SEM). This is the tricuspid valve (upper right), seen from the right ventricle of the heart

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