Synthesis of Melanin
They are dependent for their pigment on a set of enzymes within the cell (especially tyrosinase) that synthesise the large polymers generically known as melanin.
Before it contains much pigment (sufficient to be seen on light microscopy), it is known as a pre-melanosome.
Dysfunction or absence of the melanin-synthesising enzymes in conditions such as Chédiak–Higashi syndrome leads to various patterns of albinism.
Read more about this topic: Melanosome
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“The new shopping malls make possible the synthesis of all consumer activities, not least of which are shopping, flirting with objects, idle wandering, and all the permutations of these.”
—Jean Baudrillard (b. 1929)