It appears to be straightforward: one egg + one sperm = one embryo. However, if your sperm is "few, vague, and abnormal," and your wife is premenopausal at the age of 37, things become more complicated.
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It appears to be straightforward: one egg + one sperm = one embryo. However, if your sperm is "few, vague, and abnormal," and your wife is premenopausal at the age of 37, things become more complicated.
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