Morley Robbins (http://gotmag.org/) did answer my question: ‘Where the most needed Ceruloplasmin (responsible for proper Copper & Iron regulation) is made in our bodies?”:

“...Ceruloplasmin is made in the following tissue:
o 1st, & foremost, the Liver...
o the Brain (that tissue consumes Oxygen at a prodigious rate, thus Iron's high there, right?...)
o Kidney
o Breast tissue
o Gonads (other Endocrine glands?!?...)
o and Drum Roll, please...

wait for it...

o the Retina of the eyes makes 8X MORE Cp than the Brain!!!

Think that metabolic NEED for Ocular Cp might be an issue with:
o the prevalence of Blue light that burns up Cp...
o absurd intake of Hormone-D that affects Retinol (get it? Retina<>Retinol?!?...) that affects Cp production?...
o absurd intakes of Iron in our "D"iet?!?

I'll be writing MORE about this shortly... https://www.facebook.com/groups/MagnesiumAdvocacy/permalink/1279124698822263/?comment_id=1279610808773652&reply_comment_id=1279801082087958&comment_tracking=%7B%22tn%22%3A%22R3%22%7D