Instead of being cleared away for replacement by new, healthy cells, the old, defective cells become useless clutter, producing chemicals that cause harmful inflammation. (sciencedaily.com)
Their goal is to learn to replace defective cells and even whole organs. (minnpost.com)
Likewise, unregulated growth, abnormal cell division, and defective cell death pathways are hallmark features of tumors. (mdanderson.org)