BIOLOGY
Cell Cycle: https://www2.le.ac.uk/projects/vgec/schoolsandcolleges/topics/cellcycle-mitosis-meiosis
Introduction to Human Evolution:
http://humanorigins.si.edu/education/introduction-human-evolution
Human Evolution 101:
https://news.nationalgeographic.com/2015/09/human-evolution-101/
VACCINES
MEDLINEPLUS (National Library Of Medicine): https://medlineplus.gov/
CDC: Vaccines & Immunizations:
USFDA: Vaccines: https://www.fda.gov/vaccines-blood-biologics/vaccines
Vaccine-preventable Diseases: https://www.healthychildren.org/English/health-issues/vaccine-preventable-diseases/Pages/default.aspx
U.S. Dept. of Health and Human Services: Vaccines: https://www.vaccines.gov/
Mayo Clinic: Childhood Vaccines: https://newsnetwork.mayoclinic.org/discussion/childhood-vaccines-tough-questions-straight-answers/