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Table 1 Volume (percent of ooplasm) and surface density (Mean ± SEM, μm2/μm3 of ooplasm) of mitochondria, SER profiles and vesicles; and number (Mean ± SEM, per 1000 μm3 of ooplasm) of SER profiles and vesicles in oocytes at different stages of follicular development

From: Organelle reorganization in bovine oocytes during dominant follicle growth and regression

Organelle Parameter (P-value) GrowingW1 (D3W1) StaticW1 (D6W1) RegressionW1 (D1W2) Preovulatory (D ≥ 17)
Mitochondria Volume (%) (P = 0.04) 2.3 ± 0.2a 2.6 ± 0.3a 3.9 ± 0.5b 2.4 ± 0.4a
  Surface Density (μm2/μm3) (P = 0.03) 0.287 ± 0.035a 0.299 ± 0.046a 0.451 ± 0.039b 0.326 ± 0.049a
SER profiles Volume (%) (P = 0.87) 3.9 ± 0.2 4.9 ± 0.1 4.7 ± 0.8 4.4 ± 0.4
  Surface Density (μm2/μm3) (P = 0.34) 0.652 ± 0.065 0.599 ± 0.106 0.780 ± 0.065 0.653 ± 0.055
  Number (/1000 μm3) (P = 0.78) 521.5 ± 87.5 467.3 ± 84.9 670.1 ± 85.4 650.2 ± 40.9
Vesicles Volume (%) (P = 0.42) 20.4 ± 2.9 16.4 ± 1.7 16.2 ± 2.8 21.6 ± 3.2
  Surface Density (μm2/μm3) (P = 0.84) 0.972 ± 0.126 0.878 ± 0.073 0.884 ± 0.141 1.005 ± 0.083
  Number (/1000 μm3) (P = 0.86) 197.1 ± 33.3 185.8 ± 23.7 254.3 ± 94.4 202.4 ± 9.3
  1. abValues with different superscripts are different (P < 0.05). Analyses were done on proportions, not percentages