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Description
(Its not clear if the peptides were responsible for the symptoms.) Considering the skin-darkening peptide melanotan II (sometimes called the Barbie peptide)

doi: 10.1016/j.pupt.2009.08.001

It appears that adult mammalian brain levels of this receptor in the striatum and substantia nigra are reasonably low (56, 120)

Red puncta (mRFP only, representing autolysosomes) and yellow puncta (overlapping of mRFP and GFP, representing autophagosomes) were counted and presented as number per cell

SLC11A1: Solute carrier family 11 member 1
