Asbestos Exposure Mesothelioma Asbestos is a group of minerals that bond together and make thin, fibrous materials. When these materials are agitated, tiny fibers can be inhaled. They cling to the lung's lining (pleura) and may reach the heart or abdomen lining (peritoneum or tunica vaginalis). Asbestos exposure increases the http://www.stes.tyc.edu.tw/xoops/modules/profile/userinfo.php?uid=1950226