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Oooh, Nice! T cell shedding Friend murine leukemia viruses. Elizabeth R. Fischer and Kim J. Hasenkrug (National Institute of Allergy and Infectious Diseases, National Institutes of Health, Hamilton, MT)

t-cell killing a cancer cell

Bone marrow stem cell. This beauty can turn into any type of blood cell!

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

A human zygote in the 8 cell stage.

Flu (influenza) virus particles (blue) on red blood cells

Swine Flu Virus

Ruptured capillary. Coloured scanning electron micrograph (SEM) of a red blood cell squeezing out of a torn capillary. A capillary is the smallest type of blood vessel, often only just large enough for red blood cells to pass through. Red blood cells (erythrocytes) are biconcave, disc-shaped cells that transport oxygen from the lungs to body cells. Credit: STEVE GSCHMEISSNER/SCIENCE PHOTO LIBRARY

Cells

HIV Virus Cell

Red Blood Cell on a Needle

In this electron micrograph, a human white blood cell is trapping bacterial cells. This type of cell defends the body against pathogens and other harmful particles by engulfing foreign objects and destroying them with the help of enzymes from the cell's lysosomes.

Macrophage engulfing TB bacteria. Coloured scanning electron micrograph (SEM) of a macrophage white blood cell (purple) engulfing a tuberculosis (Mycobacterium tuberculosis) bacterium (pink).

Golgi apparatus in a cell.

An invading cell (orange) is surrounded by macrophages (blue) whose function is to engulf and digest foreign cells

Nerve broken open, revealing vesicles containing neurotransmitters. Beautiful!

Cervical cancer cells

red and white blood cells

✯ White Blood Cell ✯

Red Blood Cells

Stem Cell. Electron Microscopy