growth: (pathology) an abnormal proliferation of tissue (as in a tumor)
illness: impairment of normal physiological function affecting part or all of an organism
transfer rna: RNA molecules present in the cell (in at least 20 varieties, each variety capable of combining with a specific amino acid) that attach the correct amino acid to the protein chain that is being synthesized at the ribosome of the cell (according to directions coded in the mRNA)