http://www.ehd.org/virtual-human-embryo/figure.php?stage=1
A. Sperm-oocyte membrane fusion and sperm incorporation into the oocyte cytoplasm.
B. Cortical and zonal reactions composed of exocytosis of cortical granules and interaction of their contents with the zona pellucida, respectively;.
C. Extrusion of the second polar body, completing second maturation.
D. Early pronuclear formation from the maternal and paternal chromosomes.
CR = cortical reaction
FC = fertilization cone
FPn = female pronucleus
Ib = interbody
MPn = male pronucleus
PB1 = first polar body
PB2 = second polar body
SS = subzonal space
S = sperm head
Sp = maturation spindle
Z = zonal pellucida
ZR = zonal reaction.
B. Cortical and zonal reactions composed of exocytosis of cortical granules and interaction of their contents with the zona pellucida, respectively;.
C. Extrusion of the second polar body, completing second maturation.
D. Early pronuclear formation from the maternal and paternal chromosomes.
CR = cortical reaction
FC = fertilization cone
FPn = female pronucleus
Ib = interbody
MPn = male pronucleus
PB1 = first polar body
PB2 = second polar body
SS = subzonal space
S = sperm head
Sp = maturation spindle
Z = zonal pellucida
ZR = zonal reaction.
沒有留言:
張貼留言