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.
One of the smallest and most venomous spiders in the world is the black widow spider. The venom in a black widow spider is 15 times more deadly than a rattlesnake, but luckily, the spider will only bite in self-defense. One of the largest dangerous spiders in the world is the Northern funnel web spider. It lives in Australia and can grow to be more than 3 inches long. It lives in trees, is attracted to water and can sometimes be found in swimming pools.