slovodefinícia
zona pellucida
(encz)
zona pellucida, n:
Zona pellucida
(gcide)
Zona \Zo"na\, n.; pl. Zonae. [L., a girdle. See Zone.]
A zone or band; a layer.
[1913 Webster]

Zona pellucida. [NL.] (Biol.)
(a) The outer transparent layer, or envelope, of the ovum. It
is a more or less elastic membrane with radiating striae,
and corresponds to the cell wall of an ordinary cell. See
Ovum, and Illust. of Microscope.
(b) The zona radiata.

Zona radiata [NL.] (Biol.), a radiately striated membrane
situated next the yolk of an ovum, or separated from it by
a very delicate membrane only.
[1913 Webster]
zona pellucida
(wn)
zona pellucida
n 1: thick membrane around the mammalian ovum; can be penetrated
by one sperm in the fertilization process; usually remains
around the fertilized egg until it is implanted in the wall
of the uterus
podobné slovodefinícia
zona pellucida
(encz)
zona pellucida, n:
zona pellucida
(wn)
zona pellucida
n 1: thick membrane around the mammalian ovum; can be penetrated
by one sperm in the fertilization process; usually remains
around the fertilized egg until it is implanted in the wall
of the uterus

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