21.   The thymus is a gland deep in the neck and upper chest that helps regulate immune function.

22.   The thymus, located in the upper chest, is the part of the immune system where T cells mature into disease fighters.

23.   The two-inch metal name plate affixed to his uniform deflected a knife blade aimed at his upper chest during a hand-to-hand struggle with an arson suspect.

24.   Their heads were exposed, revealing bloodstained, pallid faces and gaping wounds on their necks and upper chests.

25.   Today the device is the size of a small pager, tiny enough to be implanted under the skin of the upper chest in an outpatient procedure.

26.   When the unusual pain spread through her upper chest and to her left arm, she knew it was time to get to a doctor.

27.   A sheet covered him from his upper chest to his feet.

28.   A Western diplomat in Sarajevo, who insisted on anonymity, said autopsies showed that Drljaca was shot three times in the upper right chest.

29.   A sheet covered Odai from his upper chest to his feet.

30.   Authorities also said Zakaria Oweiss had blood spots on his clothing, face and glasses consistent with a violent struggle, plus a cut on his upper chest.