Image credits
Some firstpass questions show a photograph, a radiograph, a scan or a picture taken through a microscope. Every one comes from a source that allows reuse, and this page credits those sources. It does not say which question shows which image, because the title of an image often gives away the answer.
Centers for Disease Control and Prevention
Some of these images come from the Public Health Image Library of the Centers for Disease Control and Prevention (CDC). They are in the public domain, and anyone can get them free of charge at phil.cdc.gov.
Credit goes to CDC and to the people who provided the images:
- Dr. Brinkman
- Dr. D.S. Martin
- Dr. Daniel P. Perl
- Dr. Edwin P. Ewing, Jr.
- Dr. Leanor Haley
- Dr. Mae Melvin
- James Gathany
- Joe Millar
- M. Rein
Other United States Government sources
Other bodies of the United States Government made some of the images. They are in the public domain.
- National Cancer Institute
- National Eye Institute, National Institutes of Health
- U.S. Department of Energy Human Genome Program
Given to the public domain
The authors of some images gave up their rights in them under the CC0 1.0 public domain dedication and published them on Wikimedia Commons. CC0 asks for no credit. We give it anyway, with thanks:
- Ajay Kumar Chaurasiya
- Makysm
- Mikael Häggström, M.D.
- Narraburra
Used under a Creative Commons Attribution licence
We use the images below under a Creative Commons Attribution licence. Each one is listed with its author, its licence and what we changed.
- Complete Hydatidiform Mole, by Ed Uthman. Licence: CC BY 2.0. Resized.
- Gastric Amyloidosis (Congo red stain, crossed polarizers), by Ed Uthman. Licence: CC BY 2.0. Resized.
- Leiomyoma, by Ed Uthman. Licence: CC BY 2.0. Cropped to remove a ruler; resized.
- Mature Cystic Teratoma of the Ovary, by Ed Uthman. Licence: CC BY 2.0. Resized.
- Monosodium Urate Crystals in Elbow Joint Fluid, by Ed Uthman. Licence: CC BY 2.0. Resized.
- Sickle Cell Anemia, by Ed Uthman. Licence: CC BY 2.0. Resized.
- Figure 2A of "Giardia and Vilém Dušan Lambl", PLoS Neglected Tropical Diseases 2014;8(5):e2686, by Eva Nohýnková (photograph), in an article by Marie Lipoldová. Licence: CC BY 4.0. Saved again without its embedded data; otherwise unchanged.
- Figure 4a of "Diagnosis of myocardial infarction at autopsy: AECVP reappraisal in the light of the current clinical classification", Virchows Archiv 2020;476:179–194, by Katarzyna Michaud and colleagues. Licence: CC BY 4.0. Cropped to remove a panel letter.
- Shingles Rash, by National Institute of Allergy and Infectious Diseases (NIAID). Licence: CC BY 2.0. Resized.
- Figure 8 of "Acromegaly", Orphanet Journal of Rare Diseases 2008;3:17, by Philippe Chanson and Sylvie Salenave. Licence: CC BY 2.0. Cropped to the central part of one panel, which removed text printed on the scan, and enlarged.
- Figure 3 of "Pulmonary embolism and patent foramen ovale thrombosis: the key role of TEE", Cardiovascular Ultrasound 2007;5:26, by Walter Serra, Giuseppe De Iaco, Claudio Reverberi and Tiziano Gherli. Licence: CC BY 2.0. Cropped to remove a panel letter.
Diagrams and graphs
The diagrams, graphs and other drawings in firstpass questions were made for firstpass.
No endorsement
Nobody named on this page is connected with firstpass or endorses it. The authors offer their images as they are and give no warranty for them.
Corrections
If we have credited an image wrongly, or you think one should not be here, write to team@holosbio.co and we will put it right.