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Figure 2 - Hypothesized reconstruction of the Trichomonas-like infection of a Tyrannosaurus rex. Parasites have plagued vertebrates for a very, very long time. They have co-evolved with us and our evolutionary ancestors over many millions of years.

The Hygiene Hypothesis, Part 3. Are Parasitic Worms Friend or Foe?

... aggressive or inappropriate responses and damages our own tissues in the process. We also learned how helminths ... getting out of hand and causing excessive damage to our own tissues. Mechanisms for this 'immune regulation' include ... that actively attempt to suppress it, purely to aid their own survival. Now, what happens when many of these infectious ...

Electron micrograph of an adult male Schistosoma parasite worm. The bar (bottom left) represents a magnification of 0.5mm.

The Hygiene Hypothesis Unraveled

... autoimmunity ', where the immune system attacks the body's own tissues, and ' allergy ', where harmless particles from ... much of the former and you get excessive damage of your own tissues (e.g. with autoimmune disease or allergy), too ... Diseases caused by the body's immune system targeting its own tissues 'by mistake', resulting in tissue damage. ...

''Ancylostoma caninum'', a type of hookworm, attached to the intestinal mucosa. Hookworms are blood-sucking nematodes that feed on blood. Heavy infections can cause anaemia due to loss of blood.

The Hygiene Hypothesis Part 2: Will Whipworm Work?

... aggressive or inappropriate responses and damages our own tissues in the process. Reintroducing certain parasitic ...

Inhaler

When the Immune System Fails

... and non-self, thus resulting in an attack on the body's own tissues as in the case of autoimmunity, or by an ... II Occurs when antibodies bind to antigenson the patient's own cells, marking them for destruction, Autoimmune ...

The Red Ribbon has become a symbol of HIV/Aids

The Science of HIV & AIDS in the UK

... it, called integrase, to insert this copy into the cell's own DNA. Either immediately, or after a period of dormancy ...