Chemotherapy can: 1  Make a tumor smaller before surgery or radiation therapy. This is called neo-adjuvant chemotherapy. 2  Destroy cancer cells that may remain after surgery or radiation therapy. This is called adjuvant chemotherapy. 3  Help radiation therapy and biological therapy work better.
Guinness world records has listed Brazilian Wandering Spider as the most poisonous spider in the world. They wander the floor at night rather maintaining a web or residing in a lair. During the day time, they will hide under the fallen logs, termite mounds, under the rocks and even in a banana plant.
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.