White blood cell in action

Immune System at Work: White blood cells engulf spores of the fungus Aspergillus fumigatus, which often causes disease in immunocompromised people.

Macrófago (de azul), comiéndose a las bacterias (de rosado).

The bacteria appear pink. The macrophage (appearing blue) is stretching out and engulfing them. Macrophages are a type of white blood cell which destroy non self bodies within us.

These Helicobacter pylori bacteria (formerly Campylobacter) on human stomach cells cause certain types of stomach ulcers and gastritis. SEM ...

These Helicobacter pylori bacteria (formerly Campylobacter) on human stomach cells cause certain types of stomach ulcers and gastritis. SEM at inches

Escherichia coli...It's just so fuzzy!

Escherichia Coli (E.Coli) is facultative aerobic which means it can produce ATP through respiration if oxygen is present but if not it can transition to fermentation.

Staphylococcus bacteria. Most common of the 1 trillion bacteria that live on our skin. Only a few strains of this bacteria are harmful and cause staph infections or toxic shock syndrome.  Most are harmless.

Irritating Human Parasites

Most common of the 1 trillion bacteria that live on our skin. Only a few strains of this bacteria are harmful and cause staph infections or toxic shock syndrome. Most are harmless.

Phagocytosis. Coloured scanning electron micrograph of a polymorphonuclear white blood cell or leucocyte, attacking Bacillus cereus bacteria. The leucocyte (orange), part of the body's immune system, is attaching to and engulfing the Bacillus cells (blue, rod- shaped). It uses enzymes to digest the bacteria. This process of engulfment and digestion is known as phagocytosis. Highly mobile, phagocytic cells migrate to areas of tissue damage.

Colored scanning electron micrograph of a white blood cell attacking Bacillus cereus bacteria.

Gingivitis. Coloured scanning electron micrograph (SEM) of a large number of bacteria (round) in the gingiva (gums) of a human mouth.

Your bad breath. Coloured scanning electron micrograph (SEM) of a large number of bacteria (round) in the gingiva (gums) of a human mouth.

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