Intravenous Injection of Chemotherapy. It is very common for chemotherapy medications to be injected into a vein, or intravenously. In many cases, a nurse or doctor will insert a needle into your vein, often in your hand or arm, and the chemotherapy will be given through there.
The Inland Taipan is the most poisonous snake on land, and arguably the most poisonous animal in the world. Keep your distance. 4. Blue-Ringed Octopus. If you enjoy swimming in the Pacific Ocean off the coasts of Australia & Japan beware of the Blue-ringed Octopus, considered to be one of the world's most toxic animals.
Answer: The world's most venomous insect is an ant. Not just any ant will do, since many ants don't sting. Of the ones that do, the award for most toxic venom goes to the harvester ant (Pogonomyrmex maricopa). The LD50 for harvester ant venom (in rodents) is 0.12 mg/kg. Compare that to a LD50 of 2.8 mg/kg for a honey bee (Apis mellifera) sting.