Chemotherapy for breast cancer. Chemotherapy for breast cancer. Breast cancer chemotherapy is typically used to treat patients with locally advanced or metastatic breast cancer. Neo-adjuvant (or primary systemic) breast cancer chemotherapy: May be used before surgery to reduce the size of large breast tumors and to destroy cancer cells.
Most Poisonous Insect in the World. If you want to know the record holder for the most poisonous insect in the world, then you're in the right place. The Maricopa harvester ant ranks on top.
1 Tiny poison dart frogs may only be one inch (2.5 centimeters) long, but they pack a powerful punchâof poison. 2  Weighing less than an ounce (28 grams), these frogs are considered one of Earth's most toxic, or poisonous, species. 3  For example, the golden poison dart frog has enough poison to kill 20,000 mice. Like all frogs, poison dart frogs are amphibians, a group of animals that includes toads and salamanders. 2  Poison dart frogs eat insects, including flies, crickets, ants, termites, and beetles. 3  A group of frogs is sometimes called an army.