from The American Heritage® Dictionary of the English Language, 5th Edition.
- noun Any of various small spiral-shaped bacteria of the genus Spiroplasma that lack a cell wall, move by means of a flexing motion, and cause diseases in some plants and insects.
from The American Heritage® Dictionary of the English Language, 4th Edition
(Chinese Mitten Crabs and spiroplasma) for twelve years and have come to the conclusion that all the so-called "prion" diseases are caused by an infection with cell wall deficient bacteria, mainly spiroplasma.
The most important and most knowledgeable researcher on TSE and spiroplasma is Dr. Frank Bastian.