a

b

c

d

e

f

g

h

i

j

k

l

m

n

o

p

q

r

s

t

u

v

w

x

y

z

MELATONIN

Definition

A hormone, derived from an amino acid, secreted by the pineal gland . Melatonin is concerned with biological rhythms associated with reproduction and it also affects skin pigmentation in many vertebrates.

English French Spanish Greek Norwegian Polish Hungarian Turkish Galician