Chemical pesticides are contact poisons and stomach poisons. He can even gain the specific poisons and toxins produced by specific snakes. Woodrue injects Isley with poisons and toxins as an experiment, causing her transformation. Sometimes the cause is viruses, poisons or other chemicals. The chemicals involved may be irritants, hallucinogens, convulsants, nerve poisons or vasoconstrictors. Toxicologists are experts on poisons and poisoning. Environmentally hazardous substances are not necessarily poisons, and vice versa. He supervised preparations of lethal poisons and drug experiments in mind control. She has extensive knowledge of a wide range of chemicals, drugs, hallucinogens, and poisons. Count on them to provide the poisons that kill and the potions that heal. Hecate was closely associated with plant lore and the concoction of medicines and poisons. He was made aware that his blood is able to cure all poisons and illnesses. The difference between venom and other poisons is the delivery method. The topoisomerase II poisons cause increased levels enzymes bound to DNA. Diseases were caused by poisons brought from the stars.