This study is to learn more about how the Human Papillomavirus (HPV) vaccine helps our bodies make strong defenses called antibodies. Antibodies are proteins made by your immune system to fight infections and keep you healthy. In this study, people will get three doses of the HPV vaccine over 6 months. The researchers will collect blood, saliva, and samples from lymph nodes (small glands in your body that help fight germs) to understand how the vaccine works. Bone marrow, the soft part inside your bones, will also be checked to see how it helps produce long-lasting antibodies.

• The study will take about two years with many visits for sample collection.
• Participants must be healthy adults aged 18-45 who haven't had HPV vaccines before.
• You'll need to be okay with some medical procedures like blood draws and lymph node sampling.

If you join, you'll help researchers understand how vaccines can keep us safe longer, which could lead to better vaccines in the future. Make sure you're comfortable with the time commitment and procedures before signing up.