Dictionary

• Lipofuscin
• Brown pigment granules representing lipid-containing residues of lysosomal digestion and considered one of the aging or “wear and tear” pigments; found in liver, kidney, heart muscle, adrenal, and ganglion cells.

• Nootropic
• of, relating to, or promoting the enhancement of cognition and memory and the facilitation of learning

•  Neurotransmitter
• any of several chemical substances, as epinephrine or acetylcholine, that transmit nerve impulses across a synapse to a postsynaptic element, as another nerve, muscle, or gland.