radiolabelling studies with the use of hepatocytes and isolated microsomal and rough endoplasmic reticulum -- mitochondrion fractions , followed by immunoprecipitation with anti- ( cytochrome oxidase ) antibody , reveal that the nuclear-coded cytoplasmic subunits of cytochrome oxidase are preferentially synthesized in the latter fraction .
C0230779
rough endoplasmic reticulum
C0010834
cytoplasmic