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 NCBI Filters

Results by year

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

Year Number of Results
1945 12
1946 54
1947 64
1948 73
1949 70
1950 112
1951 112
1952 114
1953 124
1954 125
1955 131
1956 134
1957 114
1958 117
1959 112
1960 124
1961 140
1962 163
1963 281
1964 335
1965 261
1966 349
1967 382
1968 383
1969 380
1970 418
1971 404
1972 418
1973 403
1974 329
1975 298
1976 264
1977 248
1978 255
1979 203
1980 181
1981 195
1982 186
1983 167
1984 171
1985 166
1986 200
1987 187
1988 183
1989 178
1990 162
1991 125
1992 131
1993 132
1994 114
1995 120
1996 99
1997 97
1998 92
1999 104
2000 66
2001 75
2002 102
2003 92
2004 103
2005 132
2006 119
2007 135
2008 118
2009 101
2010 119
2011 106
2012 102
2013 111
2014 92
2015 101
2016 106
2017 105
2018 95
2019 87
2020 79
2021 77
2022 67
2023 55
2024 23

Text availability

Article attribute

Article type

Publication date

Search Results

12,564 results

Results by year

Filters applied: . Clear all
Page 1
12,564 results
You have reached the last available page of results. Please see the User Guide for more information.
-