Table 3 A summary of GO terms that are significantly enriched in 1st (early) or 2nd (late) age-positions in VL muscles or brain cortex

Muscle contraction;

Contractile fiber;

Calcium transport;

Mitochondria;

Lipid metabolism

Apoptosis;

Estrogen receptor signaling;

Chromatin silencing;

Phagocytic vesicle;

RNA processing

Nervous system;

Nerve cell system;

Calcium transport;

Apoptosis;

Lipid metabolism;

Mitochondria;

Actin cytoskeleton;

Nucleotide biosynthesis;

Interphase;

Microtubule cytoskeleton;

Apoptosis;

Cell migration;

Cell migration;

Ion homeostasis;

Nucleotide biosynthesis;

Insulin-like growth factor signaling;

Energy biogenesis;

Hormone secretion

Androgen signaling;

Protein tyrosine kinase;

Endocytic vesicle