The 1918 flu pandemic, commonly referred to as the Spanish flu, was a category 5 influenza pandemic caused by an unusually severe and deadly Influenza A virus strain of subtype H1N1.
Project Lead The Way (PLTW) is an American nonprofit organization that develops STEM curricula for use by US elementary, middle, and high schools.
tissue plasminogen activator (TPA) A natural body ENZYME involved in the breakdown of blood clots. TPA is a small molecule protease that activates the conversion of plasminogen to plasmin. Plasmin is an enzyme that can convert fibrin strands in the blood clot to soluble products so that blood clot can be dissolved.