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.
Key Concepts: Biological control is use of material of biological origin to control the numbers or effects of a target organism. Biological control includes the use of predators, competitors, pathogens and compounds of biological origin. Microorganisms used include viruses, bacteria, fungi and protozoans.These may cause disease, or may compete with or otherwise limit the target organism. Biological controls tend to be highly specific.iological control includes the use of predators, competitors, pathogens and compounds of biological origin. Microorganisms used include viruses, bacteria, fungi and protozoans. These may cause disease, or may compete with or otherwise limit the target organism.