The culprit is Bacillus anthracis, which can encyst
in the ground for many years.
before the UVB exceeds the threshold or the chytrid fungus destroys our skin or trematodes further encyst
in our limb buds or the meteor hits and the Earth is once more wrapped in a cloak of dust.
with the notable additions of Sparganosis (a parasite that infests human muscle, forming encyst
lumps) and Melioidosis (a bacterial disease causing abscesses of the internal organs).
In an accidental host infected with the parasite, the larvae migrate to ocular and brain tissue, encyst
there and can cause listlessness, emaciation, loss of motor skills, coma, and ultimately death (Kazacos et al.
The larvae can encyst
in various tissues, causing abdominal pain, vomiting, constipation, diarrhea, and a tender abdomen .
Larvae migrate and encyst
in humans but do not develop into adults or reproduce in humans.
The ova develop into larvae, penetrate the intestinal wall, disseminate throughout the body via the vascular system, and encyst
in tissue as cysticerci.
This study tested heart muscle tissue, where the parasite prefers to encyst
, and does not require a sample of fresh blood.
After leaving snails, cercariae penetrate and encyst
in tadpoles of the genera Lithobates, Hyla and Pseudacris, which, when fed to snakes of the genus Nerodia, adult flukes occurred in the mouth and esophagus of definitive hosts 35 days later (Byrd 1935; Walker 1939; Schell 1985).
To complete the cycle, trophozoites encyst
into mononucleate cysts that undergo two consecutive nuclear divisions to produce the infecting tetranucleate cyst that is then shed in the feces by "healthy" hosts or convalescent patients.
Within the gills, Ascocotyle cercariae enter the blood stream by penetration of the vascular tissue and encyst
to form metacercariae in the fish host.
They bore through the intestinal wall into a blood vessel and are carded to muscle tissue where they encyst
, or form a protective capsule.