Heat map representations of protein copy numbers normalized by mean copy number of nascent reticulocytes during reticulocyte maturation. (A) All proteins. (B) Ribosomal proteins. (C) Mitochondrial proteins. (D) Mean protein quantity (in picograms per cell) of ribosomal and mitochondrial proteins, with globins and other proteins during reticulocyte maturation. (E) Top 200 proteins the most maintained during reticulocyte maturation. (F-G) String db graphical representation of pathways (F) and cellular components (G) enriched in the top 200 proteins maintained during maturation. BM, bone marrow.