Sounds like it could be C, but I don't have much context.
<span>The metabolic activity of a specific region of the living rat brain can be revealed by measurement of Fos protein concentration.
c-Fos is a proto-oncogene that is the homolog of the retroviral oncogene v-fos. It was first discovered in rat fibroblasts as the transforming gene of the FBJ MSV.</span>
<span>transcription/RNA processing
(1) pre-mRNA
(2) snRNA
(3) mRNA
translation
(1) rRNA
(2) tRNA
not used in protein synthesis
(1) RNA primers</span>
I have a bad habit of chewing on my finger nails
