Arctic lamprey are commonly of the parasitic form and have been know to attack salmon, lake trout, and lake whitefish.

Most parasitic forms are external parasites, while the free living forms are generally predators and may even be used to control undesirable arthropods.

A new and parasitic form of nano was about to be unleashed throughout human space, and Gabriel was going to release it.

Blend Form - A special fusion form for the 5 animals, similar to the parasitic form in its symbiotic nature.

Most have pneumocystic carinii pneumonia (a parasitic form) or a form of cancer.

The laowon are afraid of an alien lifeform that they refer to only as the 'advanced parasitic form.'

Nothing is currently known about parasitic forms outside the blood.

Their many parasitic forms include pathogens in most plants and animals (including humans).

Massive reproduction had to take place, with the chosen virus, changed to a more parasitic form, able to replicate itself using the material within the ovoid.

There are a few marine and parasitic forms, including the species Naegleria fowleri, which can become pathogenic in humans and is often fatal.