Table 1.

Mitochondrion diameters (µm) of oocytes from various stages of folliculogenesis and after in vitro maturation.

Follicular/Oocytes Stages	Primordial Follicle	Primary Follicle	Secondary Follicle	Tertiary Follicle	Matured Oocyte
Mean ± SEM	0.60 ± 0.03 ab	0.51 ± 0.03 a	0.73 ± 0.03 b	0.59 ± 0.03 ab	0.69 ± 0.03 ab
Minimum	0.340	0.223	0.416	0.276	0.272
Maximum	0.859	0.803	1.047	0.926	1.014
No. of mitochondria measured	28	28	33	29	31
No. of oocytes evaluated by TEM	9	11	7	11	12
No. of oocytes used for mitochondria evaluation	5	5	4	4	4
No. oocyte hooded mitochondria	0	0	0	3	0

^a,b Means without the same superscript differed; No, Number.