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Table 1 Characteristic differences in expression of 14-3-3 protein isoforms in the different stages of follicular development as observed by immunohistochemical staining of adult mouse ovarian sections

From: Expression of 14-3-3 protein isoforms in mouse oocytes, eggs and ovarian follicular development

Feature Isoform Stage of Ovarian Follicle
   Secondary Early Antral Graafian
Expression
in zonae pellucidae
around
oocytes
14-3-3 β
14-3-3 γ
14-3-3 ε
14-3-3 ζ
14-3-3 η
14-3-3 τ
14-3-3 σ
++
+
++
+
-
++
++
++
+
++
+
-
++
++
++
+
++
-
-
++
++
Prominent
lack of expression
in peripheral mural granulosa
cells
14-3-3 β
14-3-3 γ
14-3-3 ε
14-3-3 ζ
14-3-3 η
14-3-3 τ
14-3-3 σ
Yes
Yes
Yes
No
Yes
Yes
Yes
Yes
No
No
No
No
No
No
Yes
Yes
Yes
No
No
Yes
Yes
Marked accumulation
in granulosa cells surrounding the antrum
14-3-3 β
14-3-3 γ
14-3-3 ε
14-3-3 ζ
14-3-3 η
14-3-3 τ
14-3-3 σ
Yes
Yes
No
No
No
No
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
  1. '++' = Considerable expression; '+' = Some expression;
  2. '-' = Non-detectable expression; 'Yes' = Presence of the feature; 'No' = Feature not detectable