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While the testosterone gel did increase participants' levels of the hormone, the researchers found no evidence that testosterone administration affected performance on tests of cognitive empathy [capacity to read the emotions of others]

The experimental nature of much peptide research means that many compounds remain in early investigation stages without the extensive clinical data available for testosterone

Lowell, B

In this review, some important substrates of Cdk5 are listed in Table 1

All in all, in both reactions we have a reasonably good nucleophile, an electron-poor, unhindered electrophile, and an excellent leaving group