Types of neuroendocrine tumors. Various types of neuroendocrine tumors can occur in many places in the body and grow differently. Many NETs first appear in the lungs or the gastrointestinal tract, including the stomach, pancreas, appendix, intestines, colon and rectum. NETs may also appear in the thymus, thyroid gland, adrenal gland and pituitary gland.
Ricin is a type of biological toxin that is predominantly derived from the bean of the castor plant. Log in to see link for more information. Ricin is a type of biological toxin that is predominantly derived from the bean of the castor plant. Log in to see link for more information.
A toxin is a poison produced by an organism; it is esp. used in medicine in reference to disease-causing bacterial secretions: A toxin produces diphtheria. venom is esp. used of the poisons injected by bite, sting, etc.: snake venom; bee venom.oun. 1. poison-any substance that causes injury or illness or death of a living organism. poisonous substance, toxicant. substance-a particular kind or species of matter with uniform properties; shigella is one of the most toxic substances known to man.