Criteria

With cumulus cells

Without cumulus cells

Zona crack

No.

4

15

Mean ± S.E.

0.7 ± 0.8

2.5 ± 1.1

%

23.5^a

46.8^b

Changes in shape

No.

9

7

Mean ± S.E.

1.5 ± 1.1

1.2 ± 0.8

%

64.2^a

21.8^a

leakages

No.

4

10

Mean ± S.E.

0.7 ± 0.8

1.7 ± 0.8

%

23.5^a

31.2^b