Photo credits and licenses

Updated October 28, 2026.

Every photo on this site is a real photo or microscope image made by a U.S. government agency, so it is in the public domain (17 U.S.C. 105). We checked the license on each source page on October 18, 2026. We credit each one under the photo.

We never use agency logos or seals. A government photo does not mean any agency endorses this site, any product, or any peptide. People shown are scientists or staff at work, not peptide users.

Photo	Credit	License	Source
Front entrance of FDA Building 1 at the White Oak campus	U.S. Food and Drug Administration	Public domain, U.S. government work	Wikimedia Commons file page
FDA Building 64, a glass and metal lab building	U.S. Food and Drug Administration	Public domain, U.S. government work	Wikimedia Commons file page
A bright FDA science lab with benches and equipment	U.S. Food and Drug Administration	Public domain, U.S. government work	Wikimedia Commons file page
State health officials at a meeting with the FDA	U.S. Food and Drug Administration	Public domain, U.S. government work	Wikimedia Commons file page
Entrance of the National Library of Medicine building at NIH	National Cancer Institute (NIH)	Public domain, U.S. government work	Wikimedia Commons file page
The National Library of Medicine building at NIH	National Cancer Institute (NIH)	Public domain, U.S. government work	Wikimedia Commons file page
Gloved hands fitting a glass pipette into a pipette pump in a lab	Diane A. Reid, National Cancer Institute (NIH)	Public domain, U.S. government work (PD-USGov-HHS-NIH)	Wikimedia Commons file page
A hand holding a lab pipette over a bench	Diane A. Reid, National Cancer Institute (NIH)	Public domain, U.S. government work (PD-USGov-HHS-NIH)	Wikimedia Commons file page
Close-up of a gloved hand using a pipette to take liquid from a tiny test tube	Maggie Bartlett, National Human Genome Research Institute (NIH)	Public domain, U.S. government work (PD-USGov-HHS-NIH)	Wikimedia Commons file page
Two scientists in lab coats look closely at a small glass vial	Bill Branson, National Cancer Institute (NIH)	Public domain, U.S. government work (PD-USGov-HHS-NIH)	Wikimedia Commons file page
A pharmacist in a white coat looks at a bottle of liquid medicine in front of shelves	Bill Branson, National Cancer Institute (NIH)	Public domain, U.S. government work (PD-USGov-HHS-NIH)	Wikimedia Commons file page
Four scientists in lab coats look at a cell culture flask next to a microscope, black and white	National Cancer Institute (NIH)	Public domain, U.S. government work (PD-USGov-HHS-NIH)	Wikimedia Commons file page
A scientist looks into a microscope in a lab	Diane A. Reid, National Cancer Institute (NIH)	Public domain, U.S. government work (PD-USGov-HHS-NIH)	Wikimedia Commons file page
Two scientists look through a shared two-headed microscope, black and white	National Cancer Institute (NIH)	Public domain, U.S. government work (PD-USGov-HHS-NIH)	Wikimedia Commons file page
A scientist looks through a microscope at cells growing in a dish	National Cancer Institute (NIH)	Public domain, U.S. government work (PD-USGov-HHS-NIH)	Wikimedia Commons file page
Aerial view of the large brick NIH Clinical Center hospital buildings in Bethesda	National Institutes of Health	Public domain, U.S. government work (PD-USGov-HHS-NIH)	Wikimedia Commons file page
Microscope image of round, oddly shaped mitochondria inside a mouse liver cell	National Institutes of Health	Public domain, U.S. government work (PD-USGov-HHS-NIH)	Wikimedia Commons file page
Glowing mouse cells under a microscope: blue centers, green mitochondria, red fibers	National Institutes of Health	Public domain, U.S. government work (PD-USGov-HHS-NIH)	Wikimedia Commons file page
Gray human chromosomes on a black background with bright white tips at their ends	U.S. Department of Energy Human Genome Program (via NASA)	Public domain, U.S. government work (PD-USGov-NASA)	Wikimedia Commons file page
Two surgeons and a nurse in blue gowns and masks work at an operating table, with surgical tools in front	John Crawford, National Cancer Institute (NIH)	Public domain, U.S. government work (PD-USGov-HHS-NIH)	Wikimedia Commons file page
Colorful 3-D microscope image of a small square of lab-grown skin tissue	National Center for Advancing Translational Sciences (NIH)	Public domain, U.S. government work (PD-USGov-HHS-NIH)	Wikimedia Commons file page

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