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melanosome
(redirected from Melanosomes)

   Also found in: Medical, Wikipedia 0.01 sec.
melanosome [mə′lanĀ·ə‚sōm]
(cell and molecular biology)
An organelle which contains melanin and in which tyrosinase activity is not demonstrable.


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Dark skinned people have larger melanosomes (cells which give color to your skin) and these cells contain melanin in greater proportions as compared to the cells present in white skin.
Examining feather fossils from the Messel Shale in Germany with an electron microscope, scientists have documented this smooth layer of melanin structures, called melanosomes.
A disturbance in the maturation of melanosomes results in hypopigmentation, whereas a deficiency of platelet dense granules causes a chronic bleeding problem owing to defective secretion of compounds essential for activation of platelets.
 
 
 
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