Subcategories - Biology, Biologists
- Taxol Is Extracted from Pacific Yew Trees
- Theiler Introduces a Vaccine Against Yellow Fever
- Theobald Smith
- Thomas Henry Huxley
- Thomas Hunt Morgan
- The U.S. Centers for Disease Control Recognizes AIDS for the First Time
- U.S. Food and Drug Administration Approves Sale of Viagra
- The U.S. Supreme Court Rules That Life Forms Can Be Patented
- The United States Joins the International Biological Program
- United States to Retain Smallpox Virus Sample
- A Vaccine Is Developed for German Measles
- Vernadsky Publishes The Biosphere
- Waksman Discovers the Antibiotic Streptomycin
- Watson and Crick Develop the Double-Helix Model for DNA
- Whipple Finds Iron to be an Important Constituent of Red Blood Cells
- Wilhelm Wundt
- Wilkins Introduces Reserpine for the Treatment of High Blood Pressure
- Willadsen Clones Sheep Using a Simple Technique
- Willem Einthoven
- William Harvey
- Wolman Begins Investigating Water and Sewage Systems
- The World Wildlife Fund Is Established
- Zinsser Develops an Immunization Against Typhus
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