Something that is toxic is poisonous. Some of the wastes produced by the body are toxic. They must be removed from the body by the kidneys or by dialysis, or they will poison the body.

Waste products in the blood or any substance that is poisonous to the body.

Poisonous substances, especially proteins, that are produced by living cells or organisms and are capable of causing disease or inducing neutralizing antibodies or antitoxins when introduced into the body tissues. Reference: L1

Chemical weapons produced through biological or microbic processes.

Poisons, usually produced by or occurring in a microorganism.

Poisonous chemicals that react with specific cellular components to kill cells or to alter growth or development in undesirable ways; often harmful, even in dilute concentrations.

Poisons that can be manufactured and released by bacteria inside a sick person's body.

Chemical or natural substances that can cause harmful effects on humans; toxins include heavy metals such as cadmium, lead, and mercury, as well as organic compounds like petroleum products, polychlorinated biphenyls (PCBs), and polynuclear aromatic hydrocarbons (PAHs)

Substances, produced by microorganisms, which affect the functioning of another organism.

Poisonous substances produced as by-products of microorganisms (the pathogens), plants, and animals.

Term applied to poisons in living systems.

Poisons produced by certain micro-organisms.

Toxic substances of natural origin produced by an animal, plant, or microbe.  They differ from chemical substances in that they are not manmade.  Toxins may include botulism, ricin, and mycotoxins.

substances that cause a reduction of viability or functionality in living things.

Substances that elicit a poisonous response, for example, the microbes that cause botulism.

A poisonous substance that is produced by by organisms that is capable of inducing disease and viral effects in addition to mitigating the effects of antibodies.

Poisons produced by certain animals, plants, or bacteria.

Poisons produced by animals and plants.

Poisons that are produced by microorganisms, carried by fish or released by plants. Examples: Botulism caused by the toxin from Clostridium botulinum, scombroid poisoning from the naturally occurring scombroid toxin in some improperly refrigerated fish, such as mackerel and tuna.

A substance poisonous to organisms.

Substances that our poisonous to our bodies.

agents produced by plants and bacteria, normally very damaging to human cells.

Substances that can cause harm to the body.

Toxins are poisons produced by bacteria capable of causing food poisoning.

poisons for living things.

Irritating or poisonous substances e.g. toxins inhaled from smoking.