Hermaphrodites are common in invertebrates, this means that both male and female sexual organs are present in one individual. [animalcorner.co.uk]

however, for the very young, elderly, people allergic to them or in extreme cases, they can present further complications. [australianmuseum.net.au]

The oral disk, containing the mouth, at the upper end of the body is surrounded by petal-like tentacles, which are often present in multiples of six. [britannica.com]

They kept growing until they were covered with sediment or otherwise killed, [5] and spent most of their lives with their bodies firmly anchored to the sediment. [6] Their taxonomic affinities are presently unknown, but their mode of growth is consistent [en.wikipedia.org]

Cross-presentation The initiation of a CD8 + T cell response to an antigen that is not present within antigen-presenting cells (APCs). [nature.com]

In cases of infection, an antibiotic is the typical treatment. [medicinenet.com]

Treatment Decisive treatment should be instituted at the first indication of an allergic reaction. [dtmag.com]

Most patients recover fully and rapidly without treatment, so it is difficult to say whether any particular course of treatment has any beneficial affect at all. [wrbu.org]

The pain can be lessened by treatment of the site with vinegar, but even this is usually unnecessary. The larger the jellyfish grow, the darker they become in color, with the largest specimens being a dark, blood red. [listverse.com]

GENERAL TREATMENT PRINCIPLES Like the venoms of marine vertebrates, marine-invertebrate venoms are often mixtures of compounds. [alertdiver.com]

Descriptive epidemiology of mass mortality due to Ostreid herpesvirus-1 (OsHV-1) in commercially farmed Pacific oysters ( Crassostrea gigas ) in the Hawkesbury River estuary. Aust Aquacult 422-423 : 146– – 159 [CrossRef]. [jgv.microbiologyresearch.org]

They can also prevent irritating (and sometimes serious) coral scrapes. They'll help protect against minor jelly stings and sea lice. [tripadvisor.com]

Clownfish produce mucous on their bodies that prevent the anemones from stinging them. Because most fish can't get near anemones without being stung and eaten, the clownfish is protected from predators. [aboutfishonline.com]

The queen secretes a pheromone called "queen substance" that prevents the other females from breeding. As the queen ages or dies, or if the hive gets too large, the amount of queen substance in the hive decreases. [stlzoo.org]

In recognition of a medicinal property, the ancient Greeks burned sea sponges and inhaled the vapors as a preventative against goiter. [dtmag.com]

Apoptotic caspases prevent the induction of type I interferons by mitochondrial DNA. Cell 159, 1563–1577 (2014). [nature.com]