41.   Researchers are just beginning to understand the role eating disorders play in men, who may exercise relentlessly, binge and purge, or simply starve themselves.

42.   Protective antigen, so named before its true role was understood, serves as the attack vehicle for the other two toxins.

43.   Robinson, meanwhile, understands his role as well.

44.   The adaptation by the insect of the bacterial-produced chemical, the researchers suggest, has wide implications for understanding the roles of gut bacteria in insects.

45.   The beard keeps him from coming across as a smug adolescent, but we understand his role.

46.   The break-in protein is called protective antigen, a misleading name conferred before its exact role was understood and because it is the protein attacked by the anthrax vaccine.

47.   The McVeigh jurors apparently understood their role in the judicial process a lot better than the Nichols jurors did.

48.   The reality is consistency comes from playing under a system for an extended period of time and understanding the role you play in that system.

49.   The two players understand their roles as leaders, Quinn said.

50.   The U.S. women understand their role in all this saleswomanship, though they have vowed to stay focused on the gold medal goal in Atlanta.