No abstract available
MeSH terms
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Animals
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Digestive System / ultrastructure
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Digestive System Physiological Phenomena*
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Female
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Gonadal Steroid Hormones / biosynthesis*
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Lymnaea / physiology*
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Lymnaea / ultrastructure
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Male
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Microscopy, Electron
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Ovary / physiology*
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Ovary / ultrastructure
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Pregnenolone / metabolism*
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Sertoli Cells / physiology
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Sertoli Cells / ultrastructure
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Testis / physiology*
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Testis / ultrastructure
Substances
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Gonadal Steroid Hormones
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Pregnenolone