Apple Snails, or Ampullariidae, like most invertebrates, have an inane immune system. Basically, this means that the same immune cells attack all types of germs. Scientists have just found a toxin in a snail known as the apple snail, which is not only a protein but is also found in the snail’s eggs. So, long before a snail has actually developed into a mature mollusc, it is outfitted with a means of defense. Once the snail's eggs are fertilized, the eggs are laced with molecules that feed and protect the embryo. Apple Snails have a very bitter taste and a nasty smell. Apple snails use color but they also use a neurotoxin known as perivitellen. It is synthesized in the snail’s albumen gland from where it becomes part of the perivitelline fluid surrounding the fertilized eggs. A study was performed where ` was injected into mice. After the mice showed extreme signs of fatigue, they eventually became paralyzed from the waste down. The toxin works by disrupting the calcium regulations in the organism, and degenerating neurons in the organism's bodies. Another "great" thing about this toxin is that it disrupts permeability in the organisms cells so the toxic molecules can attack the cells at a ferocious face. The Apple Snail primarily protects itself from disease through phagocytosis which is where the immune cells ingest the germs. The Apple Snail has a "one-size fits all mentality" when it comes to it getting rid of pathogens. The immune cells ingest every pathogen regardless of what type of pathogen it is. However, the apple snails' genes can variate and adapt if needed. The apple snail lives from South America to Asia.