Skip to main page content
U.S. flag

An official website of the United States government

Dot gov

The .gov means it’s official.
Federal government websites often end in .gov or .mil. Before sharing sensitive information, make sure you’re on a federal government site.

Https

The site is secure.
The https:// ensures that you are connecting to the official website and that any information you provide is encrypted and transmitted securely.

Access keys NCBI Homepage MyNCBI Homepage Main Content Main Navigation

Search Page

Filters

My Custom Filters

Results by year

Table representation of search results timeline featuring number of search results per year.

Year Number of Results
1998 1
2002 9
2003 13
2004 14
2005 25
2006 17
2007 40
2008 46
2009 71
2010 79
2011 88
2012 96
2013 155
2014 156
2015 192
2016 156
2017 189
2018 225
2019 260
2020 318
2021 394
2022 474
2023 432
2024 449
2025 58

Publication date

Text availability

Article attribute

Article type

Additional filters

Article Language

Species

Sex

Age

Other

Search Results

3,555 results

Results by year

Filters applied: . Clear all
Page 1
3,555 results