1.   Atrix Laboratories Inc. is testing a new cancer drug, Leuprogel, that is similar to Lupron but without the testosterone surges.

2.   But researchers think highly motivated female sports fans experience the same testosterone surges.

3.   Can the testosterone surges of adolescence be channeled into political fervor?

4.   Earlier studies of such a phenomenon have shown athletes themselves experience testosterone surges when they anticipate or actually win a game.

5.   Insult a white man from the South and his testosterone levels surge.

6.   With the injections, there is a sudden testosterone surge immediately afterward and a serious dip toward the end of the period before the next injection is given.