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Comparison of a human red blood cell ,erythrocyte,, a white blood cell ,leukocyte,, and a platelet ,thrombocyte,. SEM X2500.

Comparison of a human red blood cell ,erythrocyte,, a white blood cell ,leukocyte,, and a platelet ,thrombocyte,. SEM X2500.

White blood cells (leukocytes) attacking a cancer cell!

White blood cells (leukocytes) attacking a cancer cell!

A Pioneering Woman of Science Re-Emerges After 300 Years https://www.nytimes.com/2017/01/23/science/maria-sibylla-merian-metamorphosis-insectorum-surinamensium.html?_r=0

A Pioneering Woman of Science Re-Emerges After 300 Years https://www.nytimes.com/2017/01/23/science/maria-sibylla-merian-metamorphosis-insectorum-surinamensium.html?_r=0

Retina. SEM of a section through a human retina, the light-sensitive tissue that lines the inside of the eye. Light entering the eye passes through several layers of cells before reaching the light receptors. From top to bottom are seen: cell bodies of optical ganglion cells (pale red), which form the optic nerve; cell bodies of bipolar neurons and cell bodies of the receptor cells (red); and the rod (white) and cone (yellow) receptors. Rod cells different

Retina. SEM of a section through a human retina, the light-sensitive tissue that lines the inside of the eye. Light entering the eye passes through several layers of cells before reaching the light receptors. From top to bottom are seen: cell bodies of optical ganglion cells (pale red), which form the optic nerve; cell bodies of bipolar neurons and cell bodies of the receptor cells (red); and the rod (white) and cone (yellow) receptors. Rod cells different

Granulocytic white blood cells (neutrophil), T-lymphocytes, and a red blood cell (erythrocyte).

Granulocytic white blood cells (neutrophil), T-lymphocytes, and a red blood cell (erythrocyte).

Maria Sibylla Merian captivated Europeans with her studies of insects, only to later have her work largely dismissed. Now, her findings are being celebrated again.

Maria Sibylla Merian captivated Europeans with her studies of insects, only to later have her work largely dismissed. Now, her findings are being celebrated again.

Lymphocyte. Coloured scanning electron micrograph (SEM) of a lymphocyte white blood cell. Lymphocytes are involved in the immune system's defence mechanisms, lymph system, and involved in antibody production.

Lymphocyte. Coloured scanning electron micrograph (SEM) of a lymphocyte white blood cell. Lymphocytes are involved in the immune system's defence mechanisms, lymph system, and involved in antibody production.

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