only small differences were noted in the base composition of ribosomal ribonucleic acid ( rna ) and in the amino acid composition of ribosomal proteins , including half-cystine content , as determined by cysteic acid analysis , and accessible sulfhydryl groups , as determined by titration with dithiobis ( 2-nitrobenzoic acid ) .
C0035701
ribosomal ribonucleic acid
C0035553
ribosomal