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individual genes are being activated or suppressed in response to the infection

How Staph Infections Alter Immune System

Bacteria know that they are too small to make an impact individually. So they wait, they multiply, and then they engage in behaviors that are only successful when all cells participate in unison.

By Manipulating Oxygen, Scientists Coax Bacteria Into Never-Before-Seen Solitary Wave

the salivary bacterial composition of overweight women differs from non-overweight women.

Is Obesity An Oral Bacterial Disease?

sex may have evolved in part as a defense against parasites.

Parasites May Have Had Role In Evolution Of Sex

what happens to the parasites hosted by endangered species? And although most people would side with the panda over the parasite, which group should we worry about more?

When Hosts Go Extinct, What Happens To Their Parasites?

Traumatic insemination, also known as hypodermic insemination, is the mating practice in some species of invertebrates in which the male pierces the female’s abdomen with his penis and injects his sperm through the wound into her abdominal cavity (hemocoel).

Traumatic insemination – Wikipedia, the free encyclopedia

In Xylocaris Maculipennis, this has been taken one step further, where the male will impale and inseminate other males, and the rapist’s genes enter the bloodstream to be carried to females by the victim. In this way, the rapist conceives by proxy.

Jury-Rigged Design

termite eats, the protozoa digests

Oldest Example Of Mutualism: Termites And Protozoa Discovered Together In Ancient Amber

the caterpillar–apparently brain-addled by the virus–builds a silky blanket over its attackers and defends them against predators until the wasps emerge, fully formed, and take to the skies.

IN THE WOMB: “Extreme” Animal Embryos Revealed

The flies “dive-bomb” the fire ants and lay eggs, and then the maggot that hatches inside the ant eats away at the brain. Later, the ant gets up and starts wandering for about two weeks

To kill fire ants, turn them into headless zombies | Houston & Texas News | Chron.com – Houston Chronicle