51.   The new liver cells took over the job of the failing organ.

a. + cell >>共 936
human 5.69%
terrorist 3.63%
immune 2.97%
new 2.79%
holding 2.26%
normal 2.16%
epithelial 2.06%
living 2.02%
cancerous 1.98%
embryonic 1.86%
liver 1.02%
liver + n. >>共 148
transplant 15.89%
disease 15.38%
cancer 11.89%
failure 11.02%
damage 7.53%
problem 3.74%
function 3.02%
cell 2.61%
enzyme 2.51%
ailment 2.41%
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