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.
Three Most Poisonous Spiders in the USA. North America is home to more than 3,400 different species of spiders, and the United States is home to several thousand. Of these thousands of spiders, the vast majority are relatively harmless to humans and provide environmental benefits. However, there are three species in the United States that are considered extremely venomous and can pose a danger to human health.