TATTARRATTAT is the longest palindrome in the Oxford English Dictionary 2nd edition (OED2). TATTARRATTAT is the longest palindrome in the Oxford English Dictionary 2nd edition (OED2). The OED2 is actually a historical dictionary of English, covering the language from the earliest times to the present day. Therefore it contains words like Tarrarrattat that are considered nonce words.
Tamoxifen Does Not Cause Depression. Nov. 6, 2001 -- There's been concern in recent years that the powerful breast cancer drug tamoxifen may cause or worsen depression. So much so, that it's even listed as a possible side effect in the Physician's Desk Reference.
Tamoxifen is a drug that is given to women who have estrogen-sensitive breast cancer. What does this tell you about the relationship between tamoxifen and the tumor cells in this case? The tumor cells must have receptors for estrogen, and tamoxifen is an agonist of estrogen receptors. The tumor cells have receptors for tamoxifen only.