Figure 1
From: GnRH agonist versus GnRH antagonist in assisted reproduction cycles: oocyte morphology
Oocytes with normal and abnormal morphology: (A) normal oocyte, (B) black arrow: smooth endoplasmic reticulum (SER) aggregations; white arrow: abnormal polar body (C) large perivitelline space (D) abnormal oocyte shape (E) black arrow: central cytoplasmic granulation; white arrow: abnormal polar body (F) cytoplasmic vacuoles (G) black arrow: refractile bodies; white arrow: smooth endoplasmic reticulum (SER) aggregations (H) black arrow: dark thick zona pellucida and cytoplasm; white arrow: abnormal polar body.