Ultrastructural changes in the guinea-pig placenta, with special reference to organelles associated with steroidogenesis

MeSH terms

• Animals
• Endoplasmic Reticulum / ultrastructure
• Female
• Guinea Pigs / anatomy & histology*
• Microscopy, Electron
• Mitochondria / ultrastructure
• Placenta / metabolism
• Placenta / ultrastructure*
• Pregnancy
• Progesterone / biosynthesis*
• Time Factors