Vaginal hysterectomy is a procedure in which the uterus is surgically removed through the vagina. One or both ovaries and fallopian tubes may be removed during the procedure as well; removal of both ovaries and fallopian tubes is called bilateral salpingo-oophorectomy (BSO) (figure 1).
click to view larger. Anthrax is the preferred biological warfare agent. It is highly lethal. â¢ 100 million lethal doses per gram of anthrax material (100,000 times deadlier than the deadliest chemical warfare agent). â¢ Silent, invisible killer. â¢ Inhalational anthrax is virtually always fatal. There are low barriers to production.
Anthrax is caused by bacteria that are a rod shaped organism, Bacillus anthracis. Anthrax is a non-motile organism between 1-5 micrometers in length. Upon exposure to air, anthrax forms a spore, which can become airborne to cause infection to exposed individuals. Anthrax spore can cause disease by coming in contact with abraded skin or wounds; inhalation; or ingestion. As anthrax reproduces, it releases three virulence factors: lethal factor, edema factor and antiphagocytic factor. Each of these substances enhances the destruction of cells and resists the immune system.