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.


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

My NCBI Filters
Text availability
Article attribute
Article type
Publication date

Search Results

99 results
Filters applied: . Clear all Results are displayed in a computed author sort order. Results by year timeline is unavailable
Page 1
Tryptophan modulation and cognition.
Riedel WJ, Sobczak S, Schmitt JA. Riedel WJ, et al. Adv Exp Med Biol. 2003;527:207-13. doi: 10.1007/978-1-4615-0135-0_24. Adv Exp Med Biol. 2003. PMID: 15206734 Review.
Tryptophan, mood, and cognitive function.
Riedel WJ, Klaassen T, Schmitt JA. Riedel WJ, et al. Brain Behav Immun. 2002 Oct;16(5):581-9. doi: 10.1016/s0889-1591(02)00013-2. Brain Behav Immun. 2002. PMID: 12401472 Review.
99 results