Exempel på melanin

• A crystal of phenylthiourea was added to samples to be used for electrophoresis to inhibit melanin formation.

• The precise structure of natural melanin is not known, because of its poor solubility and its association with proteins and lipids.

• This suggests that dark-adapted thresholds are directly related to rhodopsin levels regardless of the level of ocular melanin.

• The melanin content did not increase with fish length.

• Very occasionally, melanin pigmentation of the skin may occur.

• This lack of generality stands contrary to the proposed role of melanin pigment in retinal development and thus militates against this mechanism.

• The liver macrophages of chub which never aggregate contain haemosiderin but are devoid of melanin.

• The conjunctiva, sclera and iris are heavily pigmented with melanin granules and the iris contains gold-reflecting material, which is mostly obscured by the pigmented layer.

• The snail tissue is also nearly transparent, except for the digestive gland and mantle tissue which is spotted with melanin.

• The monotonic absorption profile with no specific features can be explained by the complexity of the melanin structure.

• Our findings have implications for understanding the role of melanin or related agents in the process of mammalian retinal development.

• It leaks more slowly and, due to the stimulating wavelength, provides greater visualization of structures hidden by blood, exudate, lipid or melanin.

• It is suggested that the delayed production in hardness may be associated with the presence of a reducing chemical environment produced by antioxidant properties of melanins.

• Does melanin do more than protect from light?

• Melanin containing cells of teleost fish and their relation to disease.