on the basis of the results obtained both at protein and rna levels we can distinguish 3 types of mutations characterized by ( a ) barely detectable beta subunit messenger rna and undetectable beta precursor , ( b ) decreased level of beta subunit mrna and undetectable beta precursor and ( c ) normal beta subunit mrna level and detectable beta precursor of normal size .
C0035668
rna
C0035696
messenger rna