Medical School

Erythrocytes, thrombocyte and neutrophil

Astrocytes

Red Blood Cells

(Source: technorazzi.com)

Red Blood Cells

(Source: media.science360.gov)

The history behind HeLa cells

Breast cancer cells from a research mouse model. This is what we see in a fluorescence microscope at a magnification of about one thousand fold.

Antibodies and fluorescent dyes were used to label specific cellular structures. The nuclei (that contains the DNA) is in blue, filamentous actin (which forms part of the cellular skeleton) is in red while the green indicates the presence of a surface protein called caveolin. Upon treatment with a specific hormone (bottom image), the cells become more aggressive, more motile and the caveolin moves from the punctate structures at the surface to the inside of the cells.

Once Considered Mainly ‘Brain Glue,’ Astrocytes’ Power Revealed

ScienceDaily (Mar. 29, 2012) — A type of cell plentiful in the brain, long considered mainly the stuff that holds the brain together and oft-overlooked by scientists more interested in flashier cells known as neurons, wields more power in the brain than has been realized, according to new research published March 29 in Science Signaling.

Neuroscientists at the University of Rochester Medical Center report that astrocytes are crucial for creating the proper environment for our brains to work. The team found that the cells play a key role in reducing or stopping the electrical signals that are considered brain activity, playing an active role in determining when cells called neurons fire and when they don’t.

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(via thenewenlightenmentage)

Astrocytes

These pictures show different kinds of blood cells: Red blood cells, (erythrocytes, red), white blood cells (leukocytes, yellow, greenish), and platelets (thrombocytes, grey). The disc-shaped, biconcave erythrocytes transport oxygen to the body’s cells and remove carbon dioxide to the lungs. Leukocytes are part of the immune system, defending the body against infection by ingesting pathogens by phagocytosis or by producing antibodies. Thrombocytes are involved with blood clotting. They gather at sites of injury and produce clotting factor.

A carpet of red blood cells clearly showing their typical biconcave disc shape. This highly flexible shape provides a large surface area for absorption and release of oxygen and carbon dioxide, and allows the cells to move easily through the finest of capillaries. (Colour-enhanced scanning electron micrograph by Dave McCarthy and Annie Cavanagh)

Human Kidney-Bowman’s Capsule

This Picture is showing a cross section of cortex region of the kidney. Picture is focused into a glomerulus, located within the Bowman’s Capsule.Vascular Pole, Distal Convoluted tubule(small circular region), Macula Densa(cells lining the DC) are seen on the right side. At the same time proximal convoluted tubule(circular region),Urinary pole are seen on the left side of the picture. Efferent arteriole and Afferent Arteriole, which are not seen, joins the glomerulus in the vascular pole region.

• BC-Bowman’s Capsule
• PC-Proximal Convoluted Tubule
• DC-Distal Convoluted Tubule
• VP-Vascular Pole
• UP-Urinary Pole
• MD-Macula Densa

Sickle cell anemia

Normal erythrocytes (ne) and red blood cells characteristic of Sickle cell anemia (sc)

A confocal view of cells expressing heat shock proteins that are localized to intermediate filaments.

Image by Dr. Alan R. Prescott, University of Dundee.

(via biocanvas)

Inner Ear (Cochlear) Cells