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STAGES OF OOCYTES AFTER 2 DAYS IN IVM CULTURE
A – Metaphase II
B – Metaphase I
C – Germincal vesicle
(Nikiforov et al., unpublished)
27
MATURATION AND CUMULUS EXPANSION RATES FOR IMMATURE OOCYTES IN RELATION TO THE INITIAL MORPHOLOGY
Category of oocyte
No.
No. of MII oocytes
Maturation rate (%)
Day 1
Day 2
No. of COCs with expanded cumulus
Cumulus expansion rate (%)
No. of COCs with expanded cumulus
Cumulus expansion rate (%)
Naked oocytes
212
25
12
-
-
-
-
Small COCs
399
102
26
54
14
72
18
Large COCs
284
147
52
56
20
155
55
Total
895
274
31
110
16
227
3328
(Nikiforov et al., unpublished)
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D – Degenerate
100 μm
PRECONGRESS COURSE 11 I BARCELONA, SPAIN – 1 JULY 2018 83
